Pub Date : 2026-01-18DOI: 10.1016/j.physletb.2026.140176
Pankaj Agrawal, Biswajit Das
{"title":"Effect of anomalous HHH coupling on the decay H → Z Z* → 4 charged leptons","authors":"Pankaj Agrawal, Biswajit Das","doi":"10.1016/j.physletb.2026.140176","DOIUrl":"https://doi.org/10.1016/j.physletb.2026.140176","url":null,"abstract":"","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"23 1","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995379","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 : 2026-01-17DOI: 10.1016/j.physletb.2026.140186
S. Habib Mazharimousavi
We construct and analyze charged and magnetized extensions of the axially symmetric exponential metric, that is known as the Curzon-Chazy spacetime (CCS) within the Weyl class. Working within the Einstein-Maxwell framework, we first derive an exact charged axially symmetric exponential metric by directly solving the coupled field equations for a dyonic monopole configuration. The solution is shown to reduce smoothly to the vacuum CCS in the neutral limit and to the extremal Reissner-Nordström spacetime in a special parameter regime. We then rederive the same charged geometry using the Harrison transformation in the Ernst formalism, establishing the equivalence between the direct and solution-generating approaches. Subsequently, we apply the magnetic Harrison transformation to obtain a Melvin-type magnetized deformation of the spacetime. Finally, by implementing the Ehlers transformation, we generate a stationary but nonrotating swirling geometry endowed with a nonvanishing NUT charge, which we identify invariantly via the Komar dual mass. A further magnetic Harrison transformation yields a magnetized swirling (NUT-type) spacetime. These results demonstrate how electric, magnetic, and gravitomagnetic charges arise systematically from the CCS through exact solution-generating techniques.
{"title":"Charged axially symmetric exponential metric: Exact solutions to the Einstein-Maxwell equations","authors":"S. Habib Mazharimousavi","doi":"10.1016/j.physletb.2026.140186","DOIUrl":"10.1016/j.physletb.2026.140186","url":null,"abstract":"<div><div>We construct and analyze charged and magnetized extensions of the axially symmetric exponential metric, that is known as the Curzon-Chazy spacetime (CCS) within the Weyl class. Working within the Einstein-Maxwell framework, we first derive an exact charged axially symmetric exponential metric by directly solving the coupled field equations for a dyonic monopole configuration. The solution is shown to reduce smoothly to the vacuum CCS in the neutral limit and to the extremal Reissner-Nordström spacetime in a special parameter regime. We then rederive the same charged geometry using the Harrison transformation in the Ernst formalism, establishing the equivalence between the direct and solution-generating approaches. Subsequently, we apply the magnetic Harrison transformation to obtain a Melvin-type magnetized deformation of the spacetime. Finally, by implementing the Ehlers transformation, we generate a stationary but nonrotating swirling geometry endowed with a nonvanishing NUT charge, which we identify invariantly via the Komar dual mass. A further magnetic Harrison transformation yields a magnetized swirling (NUT-type) spacetime. These results demonstrate how electric, magnetic, and gravitomagnetic charges arise systematically from the CCS through exact solution-generating techniques.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"873 ","pages":"Article 140186"},"PeriodicalIF":4.5,"publicationDate":"2026-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995804","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 : 2026-01-17DOI: 10.1016/j.physletb.2026.140174
Hantao Zhang , Dong Bai , Zhongzhou Ren
We propose a novel quantum algorithm for solving nuclear resonances, which is based on the iterative Harrow-Hassidim-Lloyd algorithm and eigenvector continuation with complex scaling. To validate this approach, we compute the resonant states of system and achieve results in good agreement with traditional methods. Our study offers a new perspective on calculating eigenvalues of non-Hermitian operators and lays some groundwork for further exploration of nuclear resonances using quantum computing.
{"title":"Iterative Harrow-Hassidim-Lloyd quantum algorithm for solving resonances with eigenvector continuation","authors":"Hantao Zhang , Dong Bai , Zhongzhou Ren","doi":"10.1016/j.physletb.2026.140174","DOIUrl":"10.1016/j.physletb.2026.140174","url":null,"abstract":"<div><div>We propose a novel quantum algorithm for solving nuclear resonances, which is based on the iterative Harrow-Hassidim-Lloyd algorithm and eigenvector continuation with complex scaling. To validate this approach, we compute the resonant states of <span><math><mrow><mi>α</mi><mo>−</mo><mi>α</mi></mrow></math></span> system and achieve results in good agreement with traditional methods. Our study offers a new perspective on calculating eigenvalues of non-Hermitian operators and lays some groundwork for further exploration of nuclear resonances using quantum computing.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"873 ","pages":"Article 140174"},"PeriodicalIF":4.5,"publicationDate":"2026-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995382","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.physletb.2026.140157
Masaki Yamada
We extend analytic formulas for the gravitational-wave (GW) spectrum from first-order phase transitions to include cosmic expansion under the thin-wall and envelope approximations. We demonstrate that even for strongly supercooled transitions the GW amplitude is bounded from above. This conclusion is explicitly verified for several representative nucleation histories, including delta-function, power-law, and power-exponential types. Moreover, the spectral shape, amplitude, and peak frequency remain largely unaffected by the details of the nucleation rate once expressed in terms of the comformal variables evaluated at an appropriately defined characteristic collision time.
{"title":"Maximal GW amplitude from bubble collisions in supercooled phase transitions","authors":"Masaki Yamada","doi":"10.1016/j.physletb.2026.140157","DOIUrl":"10.1016/j.physletb.2026.140157","url":null,"abstract":"<div><div>We extend analytic formulas for the gravitational-wave (GW) spectrum from first-order phase transitions to include cosmic expansion under the thin-wall and envelope approximations. We demonstrate that even for strongly supercooled transitions the GW amplitude is bounded from above. This conclusion is explicitly verified for several representative nucleation histories, including delta-function, power-law, and power-exponential types. Moreover, the spectral shape, amplitude, and peak frequency remain largely unaffected by the details of the nucleation rate once expressed in terms of the comformal variables evaluated at an appropriately defined characteristic collision time.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"873 ","pages":"Article 140157"},"PeriodicalIF":4.5,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995383","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.physletb.2026.140171
Malick Sallah , Eman M. Moneer , M. Sharif , Euaggelos E. Zotos
In this work, we investigate the construction of wormhole solutions within the framework of Rastall gravity by employing the minimal gravitational decoupling approach. We begin by formulating the modified field equations of Rastall theory. Utilizing this scheme, we decouple these equations and construct a minimally deformed Schwarzschild black hole solution. This deformed black hole is then linked to a wormhole geometry, and the resulting configuration is analyzed in detail. We examine key physical and geometrical properties of the wormhole, including the violation of the null energy conditions, the behavior of the active gravitational mass, the volume integral quantifier, and the embedding diagram. Our analysis reveals that the wormhole throat emerges naturally in the deformed geometry and satisfies the necessary flare-out condition. The effective energy conditions are plotted for various values of the Rastall parameter, confirming the presence of exotic matter near the throat. The results demonstrate that the amount of exotic matter required to sustain the wormhole can be minimized through appropriate geometric configurations, thereby supporting the viability of traversable wormholes in Rastall gravity.
{"title":"From black holes to wormholes via minimal geometric deformation in rastall theory","authors":"Malick Sallah , Eman M. Moneer , M. Sharif , Euaggelos E. Zotos","doi":"10.1016/j.physletb.2026.140171","DOIUrl":"10.1016/j.physletb.2026.140171","url":null,"abstract":"<div><div>In this work, we investigate the construction of wormhole solutions within the framework of Rastall gravity by employing the minimal gravitational decoupling approach. We begin by formulating the modified field equations of Rastall theory. Utilizing this scheme, we decouple these equations and construct a minimally deformed Schwarzschild black hole solution. This deformed black hole is then linked to a wormhole geometry, and the resulting configuration is analyzed in detail. We examine key physical and geometrical properties of the wormhole, including the violation of the null energy conditions, the behavior of the active gravitational mass, the volume integral quantifier, and the embedding diagram. Our analysis reveals that the wormhole throat emerges naturally in the deformed geometry and satisfies the necessary flare-out condition. The effective energy conditions are plotted for various values of the Rastall parameter, confirming the presence of exotic matter near the throat. The results demonstrate that the amount of exotic matter required to sustain the wormhole can be minimized through appropriate geometric configurations, thereby supporting the viability of traversable wormholes in Rastall gravity.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"873 ","pages":"Article 140171"},"PeriodicalIF":4.5,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995401","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.physletb.2026.140181
Oleksandr Tomalak
We analyze the hadronic uncertainty from light-quark loops coupled to (anti)neutrino in low-energy neutral-current (anti)neutrino scattering, estimated at the level. This uncertainty arises from limited knowledge of the charge-isospin correlation function of quark currents. We study the charge-charge and charge-isospin correlators within SU(2) and SU(3) chiral perturbation theory (ChPT). In SU(2) ChPT, the two correlators are identical to all orders in the chiral and electromagnetic expansions. We further perform a leading-order SU(3) ChPT calculation and discuss the relevant counterterms. Our findings reduce the hadronic uncertainty in neutral-current processes such as (anti)neutrino-electron and coherent elastic (anti)neutrino-nucleus scattering by a factor ∼ 35.
{"title":"Reducing hadronic uncertainty in low-energy neutral-current processes","authors":"Oleksandr Tomalak","doi":"10.1016/j.physletb.2026.140181","DOIUrl":"10.1016/j.physletb.2026.140181","url":null,"abstract":"<div><div>We analyze the hadronic uncertainty from light-quark loops coupled to (anti)neutrino in low-energy neutral-current (anti)neutrino scattering, estimated at the <span><math><mrow><mn>0.3</mn><mspace></mspace><mo>−</mo><mspace></mspace><mn>0.4</mn><mo>%</mo></mrow></math></span> level. This uncertainty arises from limited knowledge of the charge-isospin correlation function of quark currents. We study the charge-charge and charge-isospin correlators within SU(2) and SU(3) chiral perturbation theory (ChPT). In SU(2) ChPT, the two correlators are identical to all orders in the chiral and electromagnetic expansions. We further perform a leading-order SU(3) ChPT calculation and discuss the relevant counterterms. Our findings reduce the hadronic uncertainty in neutral-current processes such as (anti)neutrino-electron and coherent elastic (anti)neutrino-nucleus scattering by a factor ∼ 35.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"873 ","pages":"Article 140181"},"PeriodicalIF":4.5,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995400","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.physletb.2026.140177
Shota Nakagawa , Yuichiro Nakai , Yu-Cheng Qiu , Lingyun Wang , Yaoduo Wang
We investigate a cosmological scenario in which the Peccei-Quinn (PQ) symmetry remains broken in the entire history of the Universe, thereby avoiding the formation of axion strings and domain walls. Contrary to the conventional expectation, it is demonstrated that appropriately chosen scalar interactions are able to keep the PQ symmetry broken at arbitrarily high temperatures. We carefully examine the finite-temperature effective potential in a model with two PQ breaking scalar fields. The existence of flat directions plays a vital role in suppressing axion isocurvature perturbations during inflation by stabilizing a PQ field at a large field value. The viable parameter space consistent with theoretical and observational constraints is identified. Our scenario provides a minimal path for PQ symmetry breaking that addresses both the axion domain wall and isocurvature problems while permitting arbitrarily high reheating temperatures accommodating high-scale baryogenesis scenarios such as thermal leptogenesis.
{"title":"High reheating temperature without axion domain walls","authors":"Shota Nakagawa , Yuichiro Nakai , Yu-Cheng Qiu , Lingyun Wang , Yaoduo Wang","doi":"10.1016/j.physletb.2026.140177","DOIUrl":"10.1016/j.physletb.2026.140177","url":null,"abstract":"<div><div>We investigate a cosmological scenario in which the Peccei-Quinn (PQ) symmetry remains broken in the entire history of the Universe, thereby avoiding the formation of axion strings and domain walls. Contrary to the conventional expectation, it is demonstrated that appropriately chosen scalar interactions are able to keep the PQ symmetry broken at arbitrarily high temperatures. We carefully examine the finite-temperature effective potential in a model with two PQ breaking scalar fields. The existence of flat directions plays a vital role in suppressing axion isocurvature perturbations during inflation by stabilizing a PQ field at a large field value. The viable parameter space consistent with theoretical and observational constraints is identified. Our scenario provides a minimal path for PQ symmetry breaking that addresses both the axion domain wall and isocurvature problems while permitting arbitrarily high reheating temperatures accommodating high-scale baryogenesis scenarios such as thermal leptogenesis.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"873 ","pages":"Article 140177"},"PeriodicalIF":4.5,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995402","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.physletb.2026.140169
Özgür Sevinç , Özgür Ökcü , Ekrem Aydiner
In this study, we explore the relation between generalised entropies and the extended uncertainty principle (EUP) models. Starting from the higher-order extended uncertainty principle (HOEUP), we obtain the modified entropy-area relation. Then, we derive the modified Friedmann equations through three different approaches: the first law of thermodynamics at the apparent horizon, the entropic gravity case, and the emergence of cosmic space. Furthermore, we check the validity of the generalised second law (GSL). Notably, HOEUP modified Friedmann equations are the limiting cases of those obtained from a recently proposed novel entropy, which is derived from Modified Newtonian Dynamics (MOND) [Phys. Dark Universe49 (2025) 101967]. Motivated by this connection, we derive a novel EUP, referred to as MOND EUP, from a reverse procedure. This novel EUP reproduces to EUP relations associated with Rényi and dual Kaniadakis entropies in the limiting cases. Moreover, we show that HOEUP corresponds to perturbative limit of MOND entropy. The main new result of this paper is a reverse procedure beginning from a recently proposed novel MOND entropy to construct a unified EUP. This reverse procedure is not limited with the present case. In principle, the method can be applied to other generalised entropy formalisms, suggesting that our findings may establish a unified framework that bridges the generalised entropies, cutoff mechanisms, and EUP models. In particular, the corresponding modified uncertainty principles may have effective cutoff mechanisms for the entropy forms, which do not explicitly display cutoff mechanisms. Thus, these entropies may have cutoff mechanism due to their corresponding modified uncertainty principles.
{"title":"From MOND entropy to extended uncertainty principles: A unified framework","authors":"Özgür Sevinç , Özgür Ökcü , Ekrem Aydiner","doi":"10.1016/j.physletb.2026.140169","DOIUrl":"10.1016/j.physletb.2026.140169","url":null,"abstract":"<div><div>In this study, we explore the relation between generalised entropies and the extended uncertainty principle (EUP) models. Starting from the higher-order extended uncertainty principle (HOEUP), we obtain the modified entropy-area relation. Then, we derive the modified Friedmann equations through three different approaches: the first law of thermodynamics at the apparent horizon, the entropic gravity case, and the emergence of cosmic space. Furthermore, we check the validity of the generalised second law (GSL). Notably, HOEUP modified Friedmann equations are the limiting cases of those obtained from a recently proposed novel entropy, which is derived from Modified Newtonian Dynamics (MOND) [<em>Phys. Dark Universe</em> <strong>49</strong> (2025) 101967]. Motivated by this connection, we derive a novel EUP, referred to as MOND EUP, from a reverse procedure. This novel EUP reproduces to EUP relations associated with Rényi and dual Kaniadakis entropies in the limiting cases. Moreover, we show that HOEUP corresponds to perturbative limit of MOND entropy. The main new result of this paper is a reverse procedure beginning from a recently proposed novel MOND entropy to construct a unified EUP. This reverse procedure is not limited with the present case. In principle, the method can be applied to other generalised entropy formalisms, suggesting that our findings may establish a unified framework that bridges the generalised entropies, cutoff mechanisms, and EUP models. In particular, the corresponding modified uncertainty principles may have effective cutoff mechanisms for the entropy forms, which do not explicitly display cutoff mechanisms. Thus, these entropies may have cutoff mechanism due to their corresponding modified uncertainty principles.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"873 ","pages":"Article 140169"},"PeriodicalIF":4.5,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995406","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.physletb.2026.140182
Javier Llorente, Eva Sánchez
This work establishes 95% confidence level limits to models incorporating additional fermions sensitive to the strong interaction. Precision measurements of Transverse Energy-Energy Correlations at the ATLAS experiment are used, exploiting their dependence on the strong coupling constant to analyse the effects of introducing new fermions with colour charge on the Renormalisation Group Equation. The comparison between theoretical predictions, corrected up to next-to-next-to-leading order, and the data collected by ATLAS at TeV allows to constrain physics models proposing the existence of new fermions with masses up to 4 TeV, independently of assumptions on the fermion decay.
{"title":"Limits on new strongly interacting matter from measurements of Transverse Energy-Energy Correlations at s=13 TeV at the LHC","authors":"Javier Llorente, Eva Sánchez","doi":"10.1016/j.physletb.2026.140182","DOIUrl":"10.1016/j.physletb.2026.140182","url":null,"abstract":"<div><div>This work establishes 95% confidence level limits to models incorporating additional fermions sensitive to the strong interaction. Precision measurements of Transverse Energy-Energy Correlations at the ATLAS experiment are used, exploiting their dependence on the strong coupling constant to analyse the effects of introducing new fermions with colour charge on the Renormalisation Group Equation. The comparison between theoretical predictions, corrected up to next-to-next-to-leading order, and the data collected by ATLAS at <span><math><mrow><msqrt><mi>s</mi></msqrt><mo>=</mo><mn>13</mn></mrow></math></span> TeV allows to constrain physics models proposing the existence of new fermions with masses up to 4 TeV, independently of assumptions on the fermion decay.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"873 ","pages":"Article 140182"},"PeriodicalIF":4.5,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995839","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}