Pub Date : 2026-02-03DOI: 10.1016/j.rinp.2026.108594
Urjjarani Patel, K.V.S. Shiv Chaitanya
Hardy’s non-locality provides a proof of the incompatibility between quantum mechanics and local realism without using Bell inequalities. While this argument has been extensively studied for two- and three-qubit systems, a detailed analysis of the four-qubit case is still lacking. In this work, we investigate Hardy’s non-locality for a four-qubit system within the standard two-setting framework. We explicitly construct the entangled state satisfying the Hardy conditions and determine the measurement settings that maximize the success probability.
{"title":"Hardy’s non-locality in four-qubit state","authors":"Urjjarani Patel, K.V.S. Shiv Chaitanya","doi":"10.1016/j.rinp.2026.108594","DOIUrl":"10.1016/j.rinp.2026.108594","url":null,"abstract":"<div><div>Hardy’s non-locality provides a proof of the incompatibility between quantum mechanics and local realism without using Bell inequalities. While this argument has been extensively studied for two- and three-qubit systems, a detailed analysis of the four-qubit case is still lacking. In this work, we investigate Hardy’s non-locality for a four-qubit system within the standard two-setting framework. We explicitly construct the entangled state satisfying the Hardy conditions and determine the measurement settings that maximize the success probability.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"82 ","pages":"Article 108594"},"PeriodicalIF":4.6,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1016/j.rinp.2026.108590
Zain Ullah , Muhammad Sajid , Amsyar Rahim , Mohd Faudzi Umar , Nurisya Mohd Shah
We investigate localization–delocalization transition in the one-dimensional generalized Aubry–André–Harper (GAAH) model in a quasiperiodic superlattice potential. The critical interplay between the model’s two modulated energy scales — the hopping amplitude () and the on-site potential () — generates a rich phase diagram featuring extended, localized, and critical phases. We employ both static spectral and dynamics indicators to identify these phases. In static analysis, we compute the energy spectrum as a function of the common phase of the modulations and employ the inverse participation ratio (IPR) to map localization–delocalization phase diagram as a function of and . Dynamically, we model the evolution of an initially localized quantum state as a continuous-time quantum walk (CTQW), analyze the resulting probability distribution and time-dependent IPR to corroborate the static results. This work establishes a direct correspondence between static spectral indicators and dynamics, providing a unified framework for characterizing localization in quasiperiodic systems. Our findings offer new perspectives for controlling quantum transport in engineered quantum platforms.
{"title":"Localization–delocalization transition in the Generalized Aubry–André–Harper Model in a quasiperiodic superlattice potential","authors":"Zain Ullah , Muhammad Sajid , Amsyar Rahim , Mohd Faudzi Umar , Nurisya Mohd Shah","doi":"10.1016/j.rinp.2026.108590","DOIUrl":"10.1016/j.rinp.2026.108590","url":null,"abstract":"<div><div>We investigate localization–delocalization transition in the one-dimensional generalized Aubry–André–Harper (GAAH) model in a quasiperiodic superlattice potential. The critical interplay between the model’s two modulated energy scales — the hopping amplitude (<span><math><mi>t</mi></math></span>) and the on-site potential (<span><math><mi>Δ</mi></math></span>) — generates a rich phase diagram featuring extended, localized, and critical phases. We employ both static spectral and dynamics indicators to identify these phases. In static analysis, we compute the energy spectrum as a function of the common phase <span><math><mi>ϕ</mi></math></span> of the modulations and employ the inverse participation ratio (IPR) to map localization–delocalization phase diagram as a function of <span><math><mi>t</mi></math></span> and <span><math><mi>Δ</mi></math></span>. Dynamically, we model the evolution of an initially localized quantum state as a continuous-time quantum walk (CTQW), analyze the resulting probability distribution and time-dependent IPR to corroborate the static results. This work establishes a direct correspondence between static spectral indicators and dynamics, providing a unified framework for characterizing localization in quasiperiodic systems. Our findings offer new perspectives for controlling quantum transport in engineered quantum platforms.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"82 ","pages":"Article 108590"},"PeriodicalIF":4.6,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01DOI: 10.1016/j.rinp.2026.108589
Abdullo Ahadov , Davron Dzhuraev
The superconducting properties of high- cuprates are extremely sensitive to oxygen doping, which strongly modifies their lattice geometry and carrier dynamics. In this work, analytical relations derived within the Casimir–Kempf framework are applied to describe the doping dependence of the in-plane effective mass in (Hg-1201). The model connects superconducting parameters to the Casimir energy of confined vacuum electromagnetic modes between adjacent planes, establishing a geometric link among , the interlayer spacing c, the lattice constant a, the number of doped holes per Cu site , and the critical temperature . Using experimentally reported structural and transport data, values in the range 4–9 were obtained, showing a gradual increase with oxygen content and a sharp rise in the heavily overdoped region. The results indicate that the Casimir–Kempf geometric contribution provides a complementary, phenomenological scaling link between lattice geometry and the inferred in-plane effective mass. We emphasize that the extracted trends may also reflect conventional electronic mechanisms (band-structure renormalization, correlations, and scattering-rate effects), which are not disentangled in the present analysis.
{"title":"Oxygen-doping dependence of the in-plane effective mass in the HgBa2CuO4+δ superconductor: A Casimir–Kempf model analysis","authors":"Abdullo Ahadov , Davron Dzhuraev","doi":"10.1016/j.rinp.2026.108589","DOIUrl":"10.1016/j.rinp.2026.108589","url":null,"abstract":"<div><div>The superconducting properties of high-<span><math><mrow><msub><mi>T</mi><mi>c</mi></msub></mrow></math></span> cuprates are extremely sensitive to oxygen doping, which strongly modifies their lattice geometry and carrier dynamics. In this work, analytical relations derived within the Casimir–Kempf framework are applied to describe the doping dependence of the in-plane effective mass <span><math><mrow><msup><mrow><msub><mi>m</mi><mrow><mi>ab</mi></mrow></msub></mrow><mrow><mo>∗</mo></mrow></msup></mrow></math></span> in <span><math><mrow><mi>H</mi><mi>g</mi><msub><mrow><mi>B</mi><mi>a</mi></mrow><mn>2</mn></msub><mi>C</mi><mi>u</mi><msub><mi>O</mi><mrow><mn>4</mn><mo>+</mo><mi>δ</mi></mrow></msub></mrow></math></span> (Hg-1201). The model connects superconducting parameters to the Casimir energy of confined vacuum electromagnetic modes between adjacent <span><math><mrow><msub><mrow><mi>C</mi><mi>u</mi><mi>O</mi></mrow><mn>2</mn></msub></mrow></math></span> planes, establishing a geometric link among <span><math><mrow><msup><mrow><msub><mi>m</mi><mrow><mi>ab</mi></mrow></msub></mrow><mrow><mo>∗</mo></mrow></msup></mrow></math></span>, the interlayer spacing <em>c</em>, the lattice constant <em>a</em>, the number of doped holes per Cu site <span><math><mrow><msub><mi>n</mi><mi>h</mi></msub></mrow></math></span>, and the critical temperature <span><math><mrow><msub><mi>T</mi><mi>c</mi></msub></mrow></math></span>. Using experimentally reported structural and transport data, <span><math><mrow><msup><mrow><msub><mi>m</mi><mrow><mi>ab</mi></mrow></msub></mrow><mrow><mo>∗</mo></mrow></msup><mrow><mo>(</mo><mi>δ</mi><mo>)</mo></mrow></mrow></math></span> values in the range <span><math><mrow><mspace></mspace></mrow></math></span> 4–9 <span><math><mrow><msub><mi>m</mi><mi>e</mi></msub></mrow></math></span> were obtained, showing a gradual increase with oxygen content and a sharp rise in the heavily overdoped region. The results indicate that the Casimir–Kempf geometric contribution provides a complementary, phenomenological scaling link between lattice geometry and the inferred in-plane effective mass. We emphasize that the extracted <span><math><mrow><msup><mrow><msub><mi>m</mi><mrow><mi>ab</mi></mrow></msub></mrow><mrow><mo>∗</mo></mrow></msup><mrow><mo>(</mo><mi>δ</mi><mo>)</mo></mrow></mrow></math></span> trends may also reflect conventional electronic mechanisms (band-structure renormalization, correlations, and scattering-rate effects), which are not disentangled in the present analysis.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"81 ","pages":"Article 108589"},"PeriodicalIF":4.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, zinc oxide nanoparticles (ZnO NPs) were green-synthesized using Hibiscus sabdariffa extract and incorporated into cellulose-based films to enhance their structural, optical, and biological performance for wound dressing applications. Two composite formulations containing 1 wt.% and 1.5 wt.% ZnO (relative to cellulose) were fabricated and evaluated. The calcined ZnO NPs exhibited a crystallite size of 36.98 nm, confirmed by XRD, and were uniformly distributed within the cellulose matrix. UV–Vis and PL analyses revealed that the natural Hibiscus pigments contributed to improved light absorption and defect-related emissions. The films demonstrated strong antibacterial activity, with inhibition zone diameters of 23.33 mm against Escherichia coli (E. coli) and 19.67 mm against Staphylococcus aureus (S. aureus). MIC and MBC values ranged from 1562–3125 µg/mL depending on bacterial strain and ZnO content. Cytocompatibility tests on fibroblasts showed that incorporation of ZnO induced a moderate, time-dependent cytotoxic response, while maintaining viability levels acceptable for antimicrobial surface application. The Cel–ZnO 1.5 % film exhibits the highest swelling but the lowest moisture-retention stability. Prepared ZnO–cellulose composites provided the optimal balance of antibacterial efficacy and cytocompatibility, indicating its strong potential as a functional wound dressing material.
{"title":"Green-synthesized ZnO nanoparticles incorporated into cellulose films: structural, optical, antibacterial, and cytocompatibility evaluation for wound dressing applications","authors":"Sanaz Alamdari , Seyedeh Marziyeh Khademi Tabatabaee , Ahmad Farhad Talebi , Zahra Nazemi , Mohammad Mahdi Hosseinieh Farahani , Danial Moradi , Maryam Hajiebrahimi , Dmitry Albov , Pavol Hvizdos , Omid Mirzaee","doi":"10.1016/j.rinp.2025.108565","DOIUrl":"10.1016/j.rinp.2025.108565","url":null,"abstract":"<div><div>In this study, zinc oxide nanoparticles (ZnO NPs) were green-synthesized using <em>Hibiscus sabdariffa</em> extract and incorporated into cellulose-based films to enhance their structural, optical, and biological performance for wound dressing applications. Two composite formulations containing 1 wt.% and 1.5 wt.% ZnO (relative to cellulose) were fabricated and evaluated. The calcined ZnO NPs exhibited a crystallite size of 36.98 nm, confirmed by XRD, and were uniformly distributed within the cellulose matrix. UV–Vis and PL analyses revealed that the natural <em>Hibiscus</em> pigments contributed to improved light absorption and defect-related emissions. The films demonstrated strong antibacterial activity, with inhibition zone diameters of 23.33 mm against <em>Escherichia coli (E. coli)</em> and 19.67 mm against <em>Staphylococcus aureus</em> (<em>S. aureus)</em>. MIC and MBC values ranged from 1562–3125 µg/mL depending on bacterial strain and ZnO content. Cytocompatibility tests on fibroblasts showed that incorporation of ZnO induced a moderate, time-dependent cytotoxic response, while maintaining viability levels acceptable for antimicrobial surface application. The Cel–ZnO 1.5 % film exhibits the highest swelling but the lowest moisture-retention stability. Prepared ZnO–cellulose composites provided the optimal balance of antibacterial efficacy and cytocompatibility, indicating its strong potential as a functional wound dressing material.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"81 ","pages":"Article 108565"},"PeriodicalIF":4.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study investigates the interplay between relativistic effects and electron correlation effects on the first ionization energies of heavy atoms (Au through Rn, Z = 79–86). We perform two complementary analyses: (1) comparing relativistic corrections computed at both the Hartree-Fock (HF) and coupled cluster CCSD(T) levels to assess how correlation influences the magnitude of relativistic corrections, and (2) comparing correlation corrections computed within both non-relativistic and relativistic frameworks to determine how relativity influences the magnitude of correlation corrections.
Our results reveal a striking non-linear relationship between these two effects. Specifically, the combined effect of relativity and correlation on ionization energy does not equal the sum of their individual contributions. This non-additivity indicates that relativistic and correlation effects are not independent; they interact in complex ways that depend on the atomic system. We find that for some atoms, the two effects enhance each other, while for others they partially cancel. Moreover, the order in which one may add “separate” effects also counts, in that adding “pure” relativistic effects to the remaining outcome (including correlation) would give a different result than when adding “pure” correlation effects to the remaining outcome (including relativity).
These findings demonstrate that relativistic and correlation effects are inherently non-additive, reflecting the non-linearity of the quantum many-body problem. Accurate computational predictions of ionization energies in heavy-element systems thus require simultaneous treatment of both effects rather than treating them as independent contributions
本文研究了相对论效应和电子相关效应对重原子（Au ~ Rn, Z = 79 ~ 86）第一电离能的相互作用。我们进行了两项互补分析：(1)比较在har树- fock （HF）和耦合簇CCSD(T)水平上计算的相对论校正，以评估相关性如何影响相对论校正的大小；(2)比较在非相对论和相对论框架下计算的相关校正，以确定相对论如何影响相关校正的大小。我们的研究结果揭示了这两种效应之间惊人的非线性关系。具体地说，相对论和相关性对电离能的综合影响并不等于它们各自贡献的总和。这种非加性表明相对论效应和相关效应不是相互独立的；它们以依赖于原子系统的复杂方式相互作用。我们发现，对于某些原子，这两种效应相互增强，而对于另一些原子，它们部分抵消。此外，人们可能添加“分离”效应的顺序也很重要，因为将“纯”相对论效应添加到剩余结果（包括相关性）将得到与将“纯”相关效应添加到剩余结果（包括相关性）时不同的结果。这些发现表明相对论和相关效应本质上是非加性的，反映了量子多体问题的非线性。因此，对重元素系统中电离能的精确计算预测需要同时处理这两种效应，而不是将它们作为独立的贡献来处理
{"title":"A comparative study of correlation and relativistic effects on atomic ionization energy","authors":"Mohamed Kahil , Fatima Fakih , Nabil Joudieh , Nidal Chamoun","doi":"10.1016/j.rinp.2026.108588","DOIUrl":"10.1016/j.rinp.2026.108588","url":null,"abstract":"<div><div>This study investigates the interplay between relativistic effects and electron correlation effects on the first ionization energies of heavy atoms (Au through Rn, Z = 79–86). We perform two complementary analyses: (1) comparing relativistic corrections computed at both the Hartree-Fock (HF) and coupled cluster CCSD(T) levels to assess how correlation influences the magnitude of relativistic corrections, and (2) comparing correlation corrections computed within both non-relativistic and relativistic frameworks to determine how relativity influences the magnitude of correlation corrections.</div><div>Our results reveal a striking non-linear relationship between these two effects. Specifically, the combined effect of relativity and correlation on ionization energy does not equal the sum of their individual contributions. This non-additivity indicates that relativistic and correlation effects are not independent; they interact in complex ways that depend on the atomic system. We find that for some atoms, the two effects enhance each other, while for others they partially cancel. Moreover, the order in which one may add “separate” effects also counts, in that adding “pure” relativistic effects to the remaining outcome (including correlation) would give a different result than when adding “pure” correlation effects to the remaining outcome (including relativity).</div><div>These findings demonstrate that relativistic and correlation effects are inherently non-additive, reflecting the non-linearity of the quantum many-body problem. Accurate computational predictions of ionization energies in heavy-element systems thus require simultaneous treatment of both effects rather than treating them as independent contributions</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"81 ","pages":"Article 108588"},"PeriodicalIF":4.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01DOI: 10.1016/j.rinp.2026.108578
Ayesha Ijaz , Muhammad Asif , Urfi ishrat , Eman Kashita , Attalla F. El-kott , Mohammed A. AlShehri , Eman A Al-Shahari , Mohd Taukeer Khan , Mahvish Fatima , Zukhra Atamuratova , Muhammad Hammad Aziz
Even at trace levels, aflatoxin B1 (AFB1) is a highly poisonous and carcinogenic mycotoxin that poses major concerns to human health and food safety. This work describes the creation of a unique Au-NPs/Fe2O3/CeO2 nanohybrid that combines the superior electrical conductivity of gold nanoparticles with the catalytic and redox characteristics of cerium–iron oxides in order to answer the pressing demand for sensitive and dependable detection. XRD, FTIR, BET, SEM, XPS, cyclic voltammetry, and electrochemical impedance spectroscopy were used to thoroughly characterize the structural, morphological, and electrochemical characteristics of the produced nanocomposite. With a wide linear range of 10–50 ng/mL, a low detection limit of 0.1 ng/mL, high sensitivity, acceptable repeatability, and consistent performance over 18 days, the resulting immunoelectrode allowed for label-free impedimetric detection of AFB1. These results demonstrate the strong potential of the proposed nanohybrid-based biosensor for practical food safety monitoring and real-world toxin detection applications.
{"title":"Electrochemical immunosensor based on Au-NPs/Fe2O3/CeO2 nanocomposite for aflatoxin B1 detection","authors":"Ayesha Ijaz , Muhammad Asif , Urfi ishrat , Eman Kashita , Attalla F. El-kott , Mohammed A. AlShehri , Eman A Al-Shahari , Mohd Taukeer Khan , Mahvish Fatima , Zukhra Atamuratova , Muhammad Hammad Aziz","doi":"10.1016/j.rinp.2026.108578","DOIUrl":"10.1016/j.rinp.2026.108578","url":null,"abstract":"<div><div>Even at trace levels, aflatoxin B<sub>1</sub> (AFB<sub>1</sub>) is a highly poisonous and carcinogenic mycotoxin that poses major concerns to human health and food safety. This work describes the creation of a unique Au-NPs/Fe<sub>2</sub>O<sub>3</sub>/CeO<sub>2</sub> nanohybrid that combines the superior electrical conductivity of gold nanoparticles with the catalytic and redox characteristics of cerium–iron oxides in order to answer the pressing demand for sensitive and dependable detection. XRD, FTIR, BET, SEM, XPS, cyclic voltammetry, and electrochemical impedance spectroscopy were used to thoroughly characterize the structural, morphological, and electrochemical characteristics of the produced nanocomposite. With a wide linear range of 10–50 ng/mL, a low detection limit of 0.1 ng/mL, high sensitivity, acceptable repeatability, and consistent performance over 18 days, the resulting immunoelectrode allowed for label-free impedimetric detection of AFB<sub>1</sub>. These results demonstrate the strong potential of the proposed nanohybrid-based biosensor for practical food safety monitoring and real-world toxin detection applications.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"81 ","pages":"Article 108578"},"PeriodicalIF":4.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-16DOI: 10.1016/j.rinp.2026.108580
Thadei Damas Sagamiko , Joseph David Madasi
Climate threat intensifies the urgency for production of sustainable energy from the renewable resources for reducing greenhouse gas emissions and enhance resilience. Using the historical data from the period of 2000 to 2024, this study investigates renewable energy electricity production as a mitigation strategy to climate risks, modelled through a mathematical logistic growth framework. Findings unveil critical transition points beyond which the growth of renewable energy electricity production may stabilize or decline when subjected on positive and negative impacts. Furthermore, the results show, fossil energy utilized mostly at thereby increasing the tension of climate disruptions as observed at maximum emission of . In the phase from 2000 to 2010, the results show the improvement of renewable technologies from to (2010–2020) in which the reduction of the dependence on fossil fuels technologies increased. However, the improvement in renewable technologies enhanced the reduction of fossil fuel technologies dependence and therefore, minimize the climate risks. This study suggests an aggressive investment in renewable grid modernization for pushing the energy system past this threshold, fostering self-sustaining growth in renewable technologies for climate risk mitigation.
{"title":"Building renewable energy electricity production for climate risk mitigation: a mathematical logistic growth model perspective","authors":"Thadei Damas Sagamiko , Joseph David Madasi","doi":"10.1016/j.rinp.2026.108580","DOIUrl":"10.1016/j.rinp.2026.108580","url":null,"abstract":"<div><div>Climate threat intensifies the urgency for production of sustainable energy from the renewable resources for reducing greenhouse gas emissions and enhance resilience. Using the historical data from the period of 2000 to 2024, this study investigates renewable energy electricity production as a mitigation strategy to climate risks, modelled through a mathematical logistic growth framework. Findings unveil critical transition points beyond which the growth of renewable energy electricity production may stabilize or decline when subjected on positive and negative impacts. Furthermore, the results show, fossil energy utilized mostly at <span><math><mrow><mi>σ</mi><mo>=</mo><mn>1.65</mn></mrow></math></span> thereby increasing the tension of climate disruptions as observed at maximum emission of <span><math><mrow><mi>λ</mi><mo>=</mo><mn>0.019</mn></mrow></math></span>. In the phase from 2000 to 2010, the results show the improvement of renewable technologies from <span><math><mrow><mi>γ</mi><mo>=</mo><mn>0.19</mn></mrow></math></span> to <span><math><mrow><mi>γ</mi><mo>=</mo><mn>0.23</mn></mrow></math></span> (2010–2020) in which the reduction of the dependence on fossil fuels technologies increased. However, the improvement in renewable technologies enhanced the reduction of fossil fuel technologies dependence and therefore, minimize the climate risks. This study suggests an aggressive investment in<!--> <!-->renewable grid modernization for pushing the energy system past this threshold, fostering self-sustaining growth in renewable technologies for climate risk mitigation.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"81 ","pages":"Article 108580"},"PeriodicalIF":4.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-15DOI: 10.1016/j.rinp.2026.108587
Yahia Al-Omar , Majida Nahili , Nidal Chamoun
We present a multi-epoch test of gravity with nonminimal torsion–matter coupling, combining early- and late-Universe observations. At the MeV scale, Big-Bang Nucleosynthesis constrains the fractional variation of the weak freeze-out temperature, , thereby mapping light-element abundances into limits on deviations from the standard expansion history. At low redshift, we confront the model with type Ia supernovae, baryon acoustic oscillations, and cosmic-chronometer data, which respectively probe distances, the late-time standard ruler, and the Hubble rate. Independent analyses highlight the complementary roles of each dataset, while a joint SNe Ia + BAO + CC fit breaks degeneracies and yields the tightest combined bounds. As an illustration, we examine two representative torsion-modified gravity scenarios: BBN strongly limits large departures from standard cosmology, whereas late-time probes remain compatible with a near-ΛCDM background. This unified approach demonstrates the power of linking early-Universe nuclear physics with precision cosmological observables in assessing torsional extensions of gravity.
我们结合宇宙早期和晚期的观测，提出了一个具有非极小扭转-物质耦合的f(T)引力的多时代测试。在MeV尺度下，大爆炸核合成限制了弱冻结温度|δTf/Tf|的分数变化，从而将轻元素丰度映射为偏离标准膨胀历史的限制。在低红移时，我们用Ia型超新星、重子声学振荡和宇宙天文钟数据来面对模型，它们分别探测距离、晚时标准尺和哈勃速率。独立分析突出了每个数据集的互补作用，而联合的SNe Ia + BAO + CC拟合打破了简并并产生了最紧密的组合界。为了说明这一点，我们研究了两种具有代表性的扭转修正引力情景：BBN强烈限制了对标准宇宙学的大规模偏离，而晚时间探测器仍然与-ΛCDM附近的背景相容。这种统一的方法展示了将早期宇宙核物理与精确的宇宙观测结果联系起来，以评估引力的扭转扩展的力量。
{"title":"Constraining nonminimal fT gravity from Primordial Nucleosynthesis to Late-Universe observations","authors":"Yahia Al-Omar , Majida Nahili , Nidal Chamoun","doi":"10.1016/j.rinp.2026.108587","DOIUrl":"10.1016/j.rinp.2026.108587","url":null,"abstract":"<div><div>We present a multi-epoch test of <span><math><mrow><mi>f</mi><mo>(</mo><mi>T</mi><mo>)</mo></mrow></math></span> gravity with nonminimal torsion–matter coupling, combining early- and late-Universe observations. At the MeV scale, Big-Bang Nucleosynthesis constrains the fractional variation of the weak freeze-out temperature, <span><math><mrow><mrow><mo>|</mo><mi>δ</mi></mrow><msub><mi>T</mi><mi>f</mi></msub><mo>/</mo><msub><mi>T</mi><mi>f</mi></msub><mrow><mo>|</mo></mrow></mrow></math></span>, thereby mapping light-element abundances into limits on deviations from the standard expansion history. At low redshift, we confront the model with type Ia supernovae, baryon acoustic oscillations, and cosmic-chronometer data, which respectively probe distances, the late-time standard ruler, and the Hubble rate. Independent analyses highlight the complementary roles of each dataset, while a joint SNe Ia + BAO + CC fit breaks degeneracies and yields the tightest combined bounds. As an illustration, we examine two representative torsion-modified gravity scenarios: BBN strongly limits large departures from standard cosmology, whereas late-time probes remain compatible with a near-ΛCDM background. This unified approach demonstrates the power of linking early-Universe nuclear physics with precision cosmological observables in assessing torsional extensions of gravity.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"81 ","pages":"Article 108587"},"PeriodicalIF":4.6,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-14DOI: 10.1016/j.rinp.2026.108586
Shreeshmal Bhavya , Sachin Shet , K.R. Vighnesh , R. Kiran , Ashwitha Nancy D’Souza , L. Ramu , Srinivas Shenoy Heckadka , Sudha D. Kamath
This study explores the role of compositional variation on the structural, mechanical, and radiation attenuation characteristics of Bismuth Barium Boro-tellurite (BBBT) glasses. Samples were synthesized via the melt-quench technique and compositional variations were correlated with physical and mechanical parameters. Elastic moduli were estimated using the Makishima-Mackenzie model, while photon shielding factors such as mass attenuation coefficient (MAC), linear attenuation coefficient (LAC), half value layer (HVL), mean free path (MFP), and tenth value layer (TVL) were computed over 0.015–15 MeV using Phy-X/PSD. Increasing bismuth oxide (Bi2O3) content enhanced gamma attenuation through density augmentation but reduced optical transparency. To address this, cerium oxide (CeO2) was incorporated as a rare earth modifier, restoring transparency without compromising shielding performance. Further, theoretical neutron shielding estimation studies have been carried out using Monte-Carlo based simulation tool MCNP, which provided insight towards the behaviour of shielding with the glass density as well as composition which includes high neutron capture elements. The results demonstrate that compositional tailoring of BBBT glasses enables dual optimization of transparency and radiation protection, offering Pb-free materials for advanced medical shielding.
{"title":"Effect of glass composition on physical, mechanical and radiation shielding performance of Barium Bismuth Boro-tellurite glasses","authors":"Shreeshmal Bhavya , Sachin Shet , K.R. Vighnesh , R. Kiran , Ashwitha Nancy D’Souza , L. Ramu , Srinivas Shenoy Heckadka , Sudha D. Kamath","doi":"10.1016/j.rinp.2026.108586","DOIUrl":"10.1016/j.rinp.2026.108586","url":null,"abstract":"<div><div>This study explores the role of compositional variation on the structural, mechanical, and radiation attenuation characteristics of Bismuth Barium Boro-tellurite (BBBT) glasses. Samples were synthesized via the melt-quench technique and compositional variations were correlated with physical and mechanical parameters. Elastic moduli were estimated using the Makishima-Mackenzie model, while photon shielding factors such as mass attenuation coefficient (MAC), linear attenuation coefficient (LAC), half value layer (HVL), mean free path (MFP), and tenth value layer (TVL) were computed over 0.015–15 MeV using Phy-X/PSD. Increasing bismuth oxide (Bi<sub>2</sub>O<sub>3</sub>) content enhanced gamma attenuation through density augmentation but reduced optical transparency. To address this, cerium oxide (CeO<sub>2</sub>) was incorporated as a rare earth modifier, restoring transparency without compromising shielding performance. Further, theoretical neutron shielding estimation studies have been carried out using Monte-Carlo based simulation tool MCNP, which provided insight towards the behaviour of shielding with the glass density as well as composition which includes high neutron capture elements. The results demonstrate that compositional tailoring of BBBT glasses enables dual optimization of transparency and radiation protection, offering Pb-free materials for advanced medical shielding.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"81 ","pages":"Article 108586"},"PeriodicalIF":4.6,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sn-doped CaCu3Ti4O12 (CCTO) ceramics were synthesized by a sol–gel polymerization route using tin (II) acetate and low-temperature sintering (1015–1020 °C) to overcome the long-standing trade-off between colossal permittivity and dielectric loss (tan δ). Unlike solid-state processing, the sol–gel method yields small-grained, densely packed microstructures that reinforce grain-boundary (GB) barriers within the internal-barrier-layer-capacitor (IBLC) framework. Cu/Ti K-edge XANES confirms Cu2+ as the dominant species with only trace Cu+, while the Ti3+ fraction increases with Sn incorporation, evidencing mixed-valence tuning that governs electron hopping and GB blocking. Electrical mapping reveals two regimes: an ultra-high-ε′/high-loss domain at the lower sintering limit, and an optimized-balance domain at slightly higher temperature, retaining high ε′ while driving tan δ toward capacitor-grade levels. Representative compositions deliver ε′ ≈ (4–5) × 104 with tan δ ≈ 0.06 at 1 kHz (RT), alongside α ≈ 6–7 and Eb ≈ (1–2) × 103 V.cm−1. The results establish Sn incorporation through a reduced-temperature sol–gel route as a mechanistically grounded, low-thermal-budget strategy for achieving low-loss, high-ε′ CCTO ceramics suitable for MLCC-relevant applications.
{"title":"Breaking the loss barrier in CCTO: sol–gel tin enables high permittivity with capacitor-grade loss tangent","authors":"Sasitorn Putjuso , Anuchit Hunyek , Sunan Nonglek , Thanin Putjuso","doi":"10.1016/j.rinp.2026.108584","DOIUrl":"10.1016/j.rinp.2026.108584","url":null,"abstract":"<div><div>Sn-doped CaCu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> (CCTO) ceramics were synthesized by a sol–gel polymerization route using tin (II) acetate and low-temperature sintering (1015–1020 °C) to overcome the long-standing trade-off between colossal permittivity and dielectric loss (tan δ). Unlike solid-state processing, the sol–gel method yields small-grained, densely packed microstructures that reinforce grain-boundary (GB) barriers within the internal-barrier-layer-capacitor (IBLC) framework. Cu/Ti K-edge XANES confirms Cu<sup>2+</sup> as the dominant species with only trace Cu<sup>+</sup>, while the Ti<sup>3+</sup> fraction increases with Sn incorporation, evidencing mixed-valence tuning that governs electron hopping and GB blocking. Electrical mapping reveals two regimes: an ultra-high-ε′/high-loss domain at the lower sintering limit, and an optimized-balance domain at slightly higher temperature, retaining high ε′ while driving tan δ toward capacitor-grade levels. Representative compositions deliver ε′ ≈ (4–5) × 10<sup>4</sup> with tan δ ≈ 0.06 at 1 kHz (RT)<strong>,</strong> alongside α ≈ 6–7 and E<sub>b</sub> ≈ (1–2) × 10<sup>3</sup> V.cm<sup>−1</sup>. The results establish Sn incorporation through a reduced-temperature sol–gel route as a mechanistically grounded, low-thermal-budget strategy for achieving low-loss, high-ε′ CCTO ceramics suitable for MLCC-relevant applications.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"81 ","pages":"Article 108584"},"PeriodicalIF":4.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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