Pub Date : 2024-07-29DOI: 10.1016/j.nuclphysb.2024.116642
In recent works [1], [2], we have shown how n-point correlation functions in perturbative QFT can be computed without running into intermediate divergences. Here we want to illustrate explicitly that one can calculate the quantum effective potential by the same method. As a main example, we consider a theory with two fields having large and small vacuum expectation values (vev). We show that no fine-tuning between the physical quantities is needed to keep the hierarchy between the vevs of different fields.
{"title":"Effective potential in finite formulation of QFT","authors":"","doi":"10.1016/j.nuclphysb.2024.116642","DOIUrl":"10.1016/j.nuclphysb.2024.116642","url":null,"abstract":"<div><p>In recent works <span><span>[1]</span></span>, <span><span>[2]</span></span>, we have shown how <em>n</em>-point correlation functions in perturbative QFT can be computed without running into intermediate divergences. Here we want to illustrate explicitly that one can calculate the quantum effective potential by the same method. As a main example, we consider a theory with two fields having large and small vacuum expectation values (vev). We show that no fine-tuning between the <em>physical quantities</em> is needed to keep the hierarchy between the vevs of different fields.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002086/pdfft?md5=f96198598c2f456964cc700fd194b70a&pid=1-s2.0-S0550321324002086-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-29DOI: 10.1016/j.nuclphysb.2024.116641
As we all know the local topological properties of thermodynamical systems can be expressed by the winding numbers as the defects. The topological number that is the sum of all winding numbers can be used to classify the global topological nature of thermodynamical systems. In this paper, we construct a kind of thermal potential and then put the Einstein-power-Yang-Mills AdS black hole in it. Through the analysis of the geometric characteristics of the thermal potential based on the complex analysis we find the topological number is an invariant that is same as shown in the way of the Duan's ϕ-mapping topological current [Sci. Sin. 9, 1072 (1979)]. Furthermore, we adopt the Kramer's escape rate method to investigate the intensity of the first-order phase transition.
众所周知,热力学系统的局部拓扑特性可以用作为缺陷的绕组数来表示。所有缠绕数之和的拓扑数可以用来划分热力学系统的全局拓扑性质。本文构建了一种热势能,并将爱因斯坦-幂-杨-米尔斯 AdS 黑洞置于其中。通过基于复分析的热势能几何特性分析,我们发现拓扑数是一个不变量,与段氏映射拓扑流[Sci. Sin. 9, 1072 (1979)]所示的方式相同。此外,我们还采用克雷默逸散率法研究了一阶相变的强度。
{"title":"Topology and phase transition for EPYM AdS black hole in thermal potential","authors":"","doi":"10.1016/j.nuclphysb.2024.116641","DOIUrl":"10.1016/j.nuclphysb.2024.116641","url":null,"abstract":"<div><p>As we all know the local topological properties of thermodynamical systems can be expressed by the winding numbers as the defects. The topological number that is the sum of all winding numbers can be used to classify the global topological nature of thermodynamical systems. In this paper, we construct a kind of thermal potential and then put the Einstein-power-Yang-Mills AdS black hole in it. Through the analysis of the geometric characteristics of the thermal potential based on the complex analysis we find the topological number is an invariant that is same as shown in the way of the Duan's <em>ϕ</em>-mapping topological current [Sci. Sin. 9, 1072 (1979)]. Furthermore, we adopt the Kramer's escape rate method to investigate the intensity of the first-order phase transition.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002074/pdfft?md5=e6ff16af6f0fb5a0ec9fd26326d901af&pid=1-s2.0-S0550321324002074-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-29DOI: 10.1016/j.nuclphysb.2024.116638
We consider 4d SYM and the leading giant graviton correction at large N to the Schur defect 2-point functions of -BPS Wilson lines in rank-k symmetric and antisymmetric representations. We study in particular the large k limit for the symmetric case and the regime in the antisymmetric one. In both cases we present exact results for the correction. Wilson lines in symmetric/antisymmetric representations admit a description in terms of D3k and D5k brane probes representing a collection of k fundamental strings. In this picture, giant graviton corrections come from fluctuations of brane probes in the presence of a wrapped D3 brane giant graviton. In the antisymmetric case, our leading correction matches the half-index of the 4d Maxwell theory living on the disk which is a part of the giant graviton divided out by the D5k probe, as recently proposed in arXiv:2404.08302. For the symmetric case at large k, we derive an explicit exact residue formula for the leading large N correction.
{"title":"Leading large N giant graviton correction to Schur correlators in large representations","authors":"","doi":"10.1016/j.nuclphysb.2024.116638","DOIUrl":"10.1016/j.nuclphysb.2024.116638","url":null,"abstract":"<div><p>We consider 4d <span><math><mi>N</mi><mo>=</mo><mn>4</mn></math></span> <span><math><mi>U</mi><mo>(</mo><mi>N</mi><mo>)</mo></math></span> SYM and the leading giant graviton correction at large <em>N</em> to the Schur defect 2-point functions of <span><math><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac></math></span>-BPS Wilson lines in rank-<em>k</em> symmetric and antisymmetric representations. We study in particular the large <em>k</em> limit for the symmetric case and the regime <span><math><mn>1</mn><mo>≪</mo><mi>k</mi><mo>≪</mo><mi>N</mi></math></span> in the antisymmetric one. In both cases we present exact results for the correction. Wilson lines in symmetric/antisymmetric representations admit a description in terms of D3<sub><em>k</em></sub> and D5<sub><em>k</em></sub> brane probes representing a collection of <em>k</em> fundamental strings. In this picture, giant graviton corrections come from fluctuations of brane probes in the presence of a wrapped D3 brane giant graviton. In the antisymmetric case, our leading correction matches the half-index of the 4d <span><math><mi>N</mi><mo>=</mo><mn>4</mn></math></span> Maxwell theory living on the disk which is a part of the giant graviton divided out by the D5<sub><em>k</em></sub> probe, as recently proposed in <span><span>arXiv:2404.08302</span><svg><path></path></svg></span>. For the symmetric case at large <em>k</em>, we derive an explicit exact residue formula for the leading large <em>N</em> correction.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002049/pdfft?md5=9e35a9f3b5e8b21a8c9a497f408e0648&pid=1-s2.0-S0550321324002049-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-26DOI: 10.1016/j.nuclphysb.2024.116639
We explore two variations of the Curtright-Zachos (CZ) deformation of the Virasoro algebra. Firstly, we introduce a scaled CZ algebra that inherits the scaling structure found in the differential operator representation of the magnetic translation (MT) operators. We then linearly decompose the scaled CZ generators to derive two types of Hom-Lie deformations of the algebra. We discuss ⁎-bracket formulations of these algebras and their connection to the Moyal product. We show that the ⁎-bracket form of the scaled CZ algebra arises from the Moyal product, while we obtain the second type of deformed through a coordinate transformation of the first type of Moyal operators. From a physical point of view, we construct the Hamiltonian of a tight binding model (TBM) using the Wyle matrix representation of the scaled CZ algebra. We note that the integer powers of q are linked to the quantum fluctuations that are inherent in the Moyal product.
{"title":"Moyal product and generalized Hom-Lie-Virasoro symmetries in Bloch electron systems","authors":"","doi":"10.1016/j.nuclphysb.2024.116639","DOIUrl":"10.1016/j.nuclphysb.2024.116639","url":null,"abstract":"<div><p>We explore two variations of the Curtright-Zachos (CZ) deformation of the Virasoro algebra. Firstly, we introduce a scaled CZ algebra that inherits the scaling structure found in the differential operator representation of the magnetic translation (MT) operators. We then linearly decompose the scaled CZ generators to derive two types of Hom-Lie deformations of the <span><math><msub><mrow><mi>W</mi></mrow><mrow><mo>∞</mo></mrow></msub></math></span> algebra. We discuss ⁎-bracket formulations of these algebras and their connection to the Moyal product. We show that the ⁎-bracket form of the scaled CZ algebra arises from the Moyal product, while we obtain the second type of deformed <span><math><msub><mrow><mi>W</mi></mrow><mrow><mo>∞</mo></mrow></msub></math></span> through a coordinate transformation of the first type of Moyal operators. From a physical point of view, we construct the Hamiltonian of a tight binding model (TBM) using the Wyle matrix representation of the scaled CZ algebra. We note that the integer powers of <em>q</em> are linked to the quantum fluctuations that are inherent in the Moyal product.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002050/pdfft?md5=9a38b9255b03882387f94818cb0ee3cc&pid=1-s2.0-S0550321324002050-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141887196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-26DOI: 10.1016/j.nuclphysb.2024.116640
This work investigates the intricate relationship between the q-boson model, a quantum integrable system, and classical integrable systems such as the Toda and KP hierarchies. Initially, we analyze scalar products of off-shell Bethe states and explore their connections to tau functions of integrable hierarchies. Furthermore, we discuss correlation functions within this formalism, examining their representations in terms of tau functions, as well as their Schur polynomial expansions.
这项研究探讨了 q-boson 模型(一种量子可积分系统)与经典可积分系统(如 Toda 和 KP 层次)之间错综复杂的关系。首先,我们分析了贝特态的标量乘积,并探讨了它们与可积分层次的 tau 函数之间的联系。此外,我们还讨论了这一形式主义中的相关函数,研究了它们在 tau 函数方面的表示,以及它们的舒尔多项式展开。
{"title":"Q-boson model and relations with integrable hierarchies","authors":"","doi":"10.1016/j.nuclphysb.2024.116640","DOIUrl":"10.1016/j.nuclphysb.2024.116640","url":null,"abstract":"<div><p>This work investigates the intricate relationship between the q-boson model, a quantum integrable system, and classical integrable systems such as the Toda and KP hierarchies. Initially, we analyze scalar products of off-shell Bethe states and explore their connections to tau functions of integrable hierarchies. Furthermore, we discuss correlation functions within this formalism, examining their representations in terms of tau functions, as well as their Schur polynomial expansions.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002062/pdfft?md5=b7a1636fe99332503e0ba3a384f8719b&pid=1-s2.0-S0550321324002062-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141846873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.1016/j.nuclphysb.2024.116631
We re-consider recent measures of and , now compatible with the Standard Model expectations, as well as the results for the process alongside earlier determinations of and . We provide analytic constraints on the associated Wilson coefficients in both the and the sectors. These allow us to estimate the scale of potential New Physics for generic extensions of the Standard Model. We then use the results to constrain the leptoquark landscape.
{"title":"New physics pathways from B processes","authors":"","doi":"10.1016/j.nuclphysb.2024.116631","DOIUrl":"10.1016/j.nuclphysb.2024.116631","url":null,"abstract":"<div><p>We re-consider recent measures of <span><math><msub><mrow><mi>R</mi></mrow><mrow><mi>K</mi></mrow></msub></math></span> and <span><math><msub><mrow><mi>R</mi></mrow><mrow><msup><mrow><mi>K</mi></mrow><mrow><mo>⁎</mo></mrow></msup></mrow></msub></math></span>, now compatible with the Standard Model expectations, as well as the results for the process <span><math><mtext>BR</mtext><mo>(</mo><msub><mrow><mi>B</mi></mrow><mrow><mi>s</mi></mrow></msub><mo>→</mo><msup><mrow><mi>μ</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>μ</mi></mrow><mrow><mo>−</mo></mrow></msup><mo>)</mo></math></span> alongside earlier determinations of <span><math><msub><mrow><mi>R</mi></mrow><mrow><msup><mrow><mi>D</mi></mrow><mrow><mo>(</mo><mo>⁎</mo><mo>)</mo></mrow></msup></mrow></msub></math></span> and <span><math><mtext>BR</mtext><mo>(</mo><msub><mrow><mi>B</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>→</mo><mi>τ</mi><mi>ν</mi><mo>)</mo></math></span>. We provide analytic constraints on the associated Wilson coefficients in both the <span><math><mi>b</mi><mo>→</mo><mi>s</mi></math></span> and the <span><math><mi>b</mi><mo>→</mo><mi>c</mi></math></span> sectors. These allow us to estimate the scale of potential New Physics for generic extensions of the Standard Model. We then use the results to constrain the leptoquark landscape.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324001974/pdfft?md5=e963358a2b242464f7f2c2371c989d79&pid=1-s2.0-S0550321324001974-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.1016/j.nuclphysb.2024.116637
We investigate static cylindrical solutions within an extended theory of modified gravity. By incorporating various coupling functions through a straightforward boost symmetry approach, we establish the equations of motion in a self-consistent manner and subsequently determine the linear scalar field profile. Utilizing analytical methods, we solve the system of equations for the metric functions and the gauge field, revealing their dependence on Bessel's functions. To comprehend gravito-objects exhibiting cylindrical symmetry, we develop a perturbative framework aimed at identifying all nontrivial solutions for the scalar profiles. Introducing first-order truncated perturbation equations for the gauge field, synchronized with metric gauges and electromagnetic field considerations, we demonstrate their integrability and obtain solutions through quadrature. Our findings suggest the feasibility of obtaining self-gravitating cylindrical structures within the scalar-vector-tensor theory. These cylindrical structures could provide insights into the behavior of gravitational and gauge fields in modified gravity, potentially offering new perspectives on astrophysical phenomena such as cosmic strings and cylindrical gravitational waves.
{"title":"Exploring self-gravitating cylindrical structures in modified gravity: Insights from scalar-vector-tensor theory","authors":"","doi":"10.1016/j.nuclphysb.2024.116637","DOIUrl":"10.1016/j.nuclphysb.2024.116637","url":null,"abstract":"<div><p>We investigate static cylindrical solutions within an extended theory of modified gravity. By incorporating various coupling functions through a straightforward boost symmetry approach, we establish the equations of motion in a self-consistent manner and subsequently determine the linear scalar field profile. Utilizing analytical methods, we solve the system of equations for the metric functions and the <span><math><mi>U</mi><mo>(</mo><mn>1</mn><mo>)</mo></math></span> gauge field, revealing their dependence on Bessel's functions. To comprehend gravito-objects exhibiting cylindrical symmetry, we develop a perturbative framework aimed at identifying all nontrivial solutions for the scalar profiles. Introducing first-order truncated perturbation equations for the gauge field, synchronized with metric gauges and electromagnetic field considerations, we demonstrate their integrability and obtain solutions through quadrature. Our findings suggest the feasibility of obtaining self-gravitating cylindrical structures within the scalar-vector-tensor theory. These cylindrical structures could provide insights into the behavior of gravitational and gauge fields in modified gravity, potentially offering new perspectives on astrophysical phenomena such as cosmic strings and cylindrical gravitational waves.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002037/pdfft?md5=52f91f53c98b3d15a9d974b50b410360&pid=1-s2.0-S0550321324002037-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-24DOI: 10.1016/j.nuclphysb.2024.116632
In this work, we introduce the theoretical framework of the phonon-mediated Migdal effect for neutrino-nucleus scattering in semiconductors, considering both the Standard Model and the presence of the neutrino magnetic moment. We calculate the rate of electron excitation resulting from the Migdal effect and observe a substantial coherent enhancement compared to ordinary neutrino-electron scattering. Furthermore, we provide numerical sensitivities for detecting the Migdal effect and constraints on the neutrino magnetic moment, utilizing an experimental setup with reactor neutrinos.
{"title":"Migdal effect of phonon-mediated neutrino nucleus scattering in semiconductor detectors","authors":"","doi":"10.1016/j.nuclphysb.2024.116632","DOIUrl":"10.1016/j.nuclphysb.2024.116632","url":null,"abstract":"<div><p>In this work, we introduce the theoretical framework of the phonon-mediated Migdal effect for neutrino-nucleus scattering in semiconductors, considering both the Standard Model and the presence of the neutrino magnetic moment. We calculate the rate of electron excitation resulting from the Migdal effect and observe a substantial coherent enhancement compared to ordinary neutrino-electron scattering. Furthermore, we provide numerical sensitivities for detecting the Migdal effect and constraints on the neutrino magnetic moment, utilizing an experimental setup with reactor neutrinos.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324001986/pdfft?md5=5da8198f2c8b050a8c302895c34e3695&pid=1-s2.0-S0550321324001986-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-22DOI: 10.1016/j.nuclphysb.2024.116636
The Proca theory of the real massive vector field admits non-equilibrium solutions, where the asymptotic dynamics of the electric field is dominated by the periodically oscillating Coulomb component. We discuss how such field configurations are seen in different reference frames, where we find an intriguing spatial pattern of the vector field of the Proca theory and the electromagnetic field associated with it. Our studies are carried out in the framework of the classical Proca theory.
{"title":"Reference frame dependence of the periodically oscillating Coulomb field in the Proca theory","authors":"","doi":"10.1016/j.nuclphysb.2024.116636","DOIUrl":"10.1016/j.nuclphysb.2024.116636","url":null,"abstract":"<div><p>The Proca theory of the real massive vector field admits non-equilibrium solutions, where the asymptotic dynamics of the electric field is dominated by the periodically oscillating Coulomb component. We discuss how such field configurations are seen in different reference frames, where we find an intriguing spatial pattern of the vector field of the Proca theory and the electromagnetic field associated with it. Our studies are carried out in the framework of the classical Proca theory.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002025/pdfft?md5=a5f74d5cb8c7b2ee278bfa53ca4cfe31&pid=1-s2.0-S0550321324002025-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-18DOI: 10.1016/j.nuclphysb.2024.116634
This study investigates the possibility of a homogeneous and isotropic cosmological solution within the context of the Maxwell-Weyl gauge theory of gravity. To achieve this, we utilize the Einstein-Yang-Mills theory as an analogy and represent the Maxwell gauge field in terms of two time-dependent scalar fields. We derive the modified Friedmann equations, integrating the contributions from the Maxwell gauge fields and an effective cosmological constant that depends on the Dirac scalar field. Our analysis reveals how these modifications influence various cosmological scenarios, including power-law evolution, de Sitter-like expansion, inflationary phases, non-singular bounce cosmologies, and cyclic cosmologies.
{"title":"Modified Friedmann equations from Maxwell-Weyl gauge theory","authors":"","doi":"10.1016/j.nuclphysb.2024.116634","DOIUrl":"10.1016/j.nuclphysb.2024.116634","url":null,"abstract":"<div><p>This study investigates the possibility of a homogeneous and isotropic cosmological solution within the context of the Maxwell-Weyl gauge theory of gravity. To achieve this, we utilize the Einstein-Yang-Mills theory as an analogy and represent the Maxwell gauge field in terms of two time-dependent scalar fields. We derive the modified Friedmann equations, integrating the contributions from the Maxwell gauge fields and an effective cosmological constant that depends on the Dirac scalar field. Our analysis reveals how these modifications influence various cosmological scenarios, including power-law evolution, de Sitter-like expansion, inflationary phases, non-singular bounce cosmologies, and cyclic cosmologies.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002001/pdfft?md5=f962f1e742a03989a1b0ef003d5dcd41&pid=1-s2.0-S0550321324002001-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}