Nuclear Physics B最新文献_第4页

Tsallis and Rényi statistics based on H0 controversy

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-03-07 DOI: 10.1016/j.nuclphysb.2025.116862

N. Sadeghnezhad

引用次数: 0

Thermodynamics of Euler-Heisenberg AdS black hole surrounded by quintessence field using shadow

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-03-07 DOI: 10.1016/j.nuclphysb.2025.116859

Debojyoti Mondal, Tanusree Roy, Ujjal Debnath

{"title":"Thermodynamics of Euler-Heisenberg AdS black hole surrounded by quintessence field using shadow","authors":"Debojyoti Mondal, Tanusree Roy, Ujjal Debnath","doi":"10.1016/j.nuclphysb.2025.116859","DOIUrl":"10.1016/j.nuclphysb.2025.116859","url":null,"abstract":"<div><div>We extend the black hole solution of Euler-Heisenberg gravitational theory in AdS space-time by introducing quintessence field in it and studied thermodynamics and phase structure using both semi classical analysis and shadow formalism by considering Λ as thermodynamic pressure. We compare the results obtained by these two methods. The N-type change in temperature for <span><math><mi>P</mi><mo><</mo><msub><mrow><mi>P</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span> can be seen. The nature of Gibbs free energy ensures the second order phase transition for <span><math><mi>P</mi><mo><</mo><msub><mrow><mi>P</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span>, which agrees with the temperature behaviour and then derived heat capacity, Joule-Thomson coefficient to study local stability and heating (or cooling) effect. Assuming black hole as a thermodynamic engine, we calculate the efficiency of Carnot cycle and Rankin cycle and study the impact of various black hole parameters on them. We also studied Ruppeiner thermodynamic geometry in {S,Q} thermodynamic phase space to study the BH at molecular level.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1014 ","pages":"Article 116859"},"PeriodicalIF":2.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592427","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}

引用次数: 0

Poincare gauge gravity from nonmetric gravity

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-03-05 DOI: 10.1016/j.nuclphysb.2025.116860

James T. Wheeler

引用次数: 0

Exploring the dark annihilation: Multi-component asymmetric and symmetric dark matter 探索暗湮灭多组分不对称和对称暗物质

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-02-28 DOI: 10.1016/j.nuclphysb.2025.116855

Amit Dutta Banik

引用次数: 0

Foams and KZ-equations in Rozansky-Witten theories

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-02-28 DOI: 10.1016/j.nuclphysb.2025.116856

Sergei Gukov , Babak Haghighat , Nicolai Reshetikhin

引用次数: 0

Non-linear realizations and invariant action principles in higher gauge theory

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-02-28 DOI: 10.1016/j.nuclphysb.2025.116858

S. Salgado

{"title":"Non-linear realizations and invariant action principles in higher gauge theory","authors":"S. Salgado","doi":"10.1016/j.nuclphysb.2025.116858","DOIUrl":"10.1016/j.nuclphysb.2025.116858","url":null,"abstract":"<div><div>We propose an extension of the formalism of non-linear realizations to the case of FDAs. We first consider the case of FDAs carrying one <em>p</em>-form extension and no non-trivial cohomology. We show that it is possible to define large gauge transformations as a direct extension of those induced by their Lie subalgebras, and study the resulting non-linear realizations. Furthermore, we extend the results to the case FDAs with non-trivial cohomology by introducing large gauge transformations that carry the information about the FDA cocycle structure constants. We consider two bosonic examples of this type of gauge algebra, namely, FDA extensions of the Poincaré and Maxwell algebras, write down their dual <span><math><msub><mrow><mi>L</mi></mrow><mrow><mo>∞</mo></mrow></msub></math></span> algebras and study their non-linear realizations and possible invariant action principles. Finally, consider a similar treatment on the FDA of <span><math><mi>D</mi><mo>=</mo><mn>11</mn></math></span> supergravity, by deriving its dual algebra and presenting a non-linear realization that allows a gauge invariant formulation of its action principle.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1013 ","pages":"Article 116858"},"PeriodicalIF":2.5,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534379","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}

引用次数: 0

Analyzing WGC and WCCC through charged scalar fields fluxes with charged AdS black holes surrounded by perfect fluid dark matter in the CFT thermodynamics 通过CFT热力学中被完美流体暗物质包围的带电AdS黑洞的带电标量场通量分析WGC和WCCC

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-02-28 DOI: 10.1016/j.nuclphysb.2025.116857

Ankit Anand , Saeed Noori Gashti , Mohammad Reza Alipour , Mohammad Ali S. Afshar

{"title":"Analyzing WGC and WCCC through charged scalar fields fluxes with charged AdS black holes surrounded by perfect fluid dark matter in the CFT thermodynamics","authors":"Ankit Anand , Saeed Noori Gashti , Mohammad Reza Alipour , Mohammad Ali S. Afshar","doi":"10.1016/j.nuclphysb.2025.116857","DOIUrl":"10.1016/j.nuclphysb.2025.116857","url":null,"abstract":"<div><div>In this paper, we conduct a comprehensive investigation into the weak cosmic censorship conjecture (WCCC) for Reissner-Nordström (R-N) AdS black holes that are influenced by Perfect Fluid Dark Matter (PFDM). Our study is framed within the context of Conformal Field Theory (CFT) thermodynamics. We delve into the principles of energy flux and mass-energy equivalence to explore the interplay between the weak gravity conjecture (WGC) and the WCCC. Our analysis begins by examining the interaction between incoming and outgoing energy fluxes, which induces changes in the black hole's properties. By applying the first law of thermodynamics, we assess the validity of the second law in these dynamic scenarios. We also consider equilibrium conditions that involve both absorption and superradiance processes. Utilizing the framework of black hole thermodynamics within CFT, we demonstrate that the WCCC is upheld if the black hole is in or near an extremal state, particularly when it is subjected to radiation and particle absorption. This finding is significant as it reinforces the robustness of the WCCC under these specific conditions. Furthermore, we uncover additional insights by employing mass-energy equivalence principles and conducting second-order approximations near the extremality state. Specifically, we find that when a black hole radiates and its central charge surpasses the scaled electric charge, the emitted superradiant particles adhere to the WGC. This adherence results in the black hole moving away from its extremal state, thereby maintaining the WCCC.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1013 ","pages":"Article 116857"},"PeriodicalIF":2.5,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534377","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}

引用次数: 0

Magnetic suppression of cosmic rays' flux in f(R) and f(Q) theories of gravity

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-02-27 DOI: 10.1016/j.nuclphysb.2025.116851

Swaraj Pratim Sarmah, Umananda Dev Goswami

{"title":"Magnetic suppression of cosmic rays' flux in f(R) and f(Q) theories of gravity","authors":"Swaraj Pratim Sarmah, Umananda Dev Goswami","doi":"10.1016/j.nuclphysb.2025.116851","DOIUrl":"10.1016/j.nuclphysb.2025.116851","url":null,"abstract":"<div><div>We investigate the effects of magnetic diffusion on the spectrum of ultra-high energy cosmic rays (UHECRs) from a cosmological perspective. To this end, we consider two modified theories of gravity (MTGs), namely, the <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>)</mo></math></span> gravity and a symmetric teleparallel gravity, also known as <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> gravity. Utilizing these two MTGs, we calculate the suppression in the flux of UHECRs for a collection of sources. Non-evolution (NE) and cosmic star formation rate (SFR) scenarios have been considered in our calculation of the suppression factor. This study also includes a mixed composition scenario involving the nuclei upto iron (Fe). Furthermore, we provide a parameterization of the suppression factor for the proton and also for the mixed compositions within the <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>)</mo></math></span> and <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> theories, considering both NE and SFR scenarios. The influence of the turbulent magnetic field on the suppression factor is also incorporated in our work. Comparative analysis of all our results with the standard ΛCDM model reveals significant effects of MTGs on the suppression factor that the <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>)</mo></math></span> power-law model predicts the lowest suppression factor, while the <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> model predicts the highest, and interestingly the results from the standard model fall within the range predicted by these two cosmological models.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1013 ","pages":"Article 116851"},"PeriodicalIF":2.5,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519973","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}

引用次数: 0

Bouncing cosmology and the dynamical stability analysis in f(R,Lm)-gravity

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-02-27 DOI: 10.1016/j.nuclphysb.2025.116854

Shaily , J.K. Singh , Dimple Sethi , Rita Rani , Kazuharu Bamba

{"title":"Bouncing cosmology and the dynamical stability analysis in f(R,Lm)-gravity","authors":"Shaily , J.K. Singh , Dimple Sethi , Rita Rani , Kazuharu Bamba","doi":"10.1016/j.nuclphysb.2025.116854","DOIUrl":"10.1016/j.nuclphysb.2025.116854","url":null,"abstract":"<div><div>We study the bouncing cosmology in the <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>,</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub><mo>)</mo></math></span> theory of gravity. In this model, we consider a specific function of <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>,</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub><mo>)</mo></math></span> which contains the higher order curvature term along with the matter Lagrangian. Here, we parameterize the Hubble parameter with the motivation that it creates a model with bouncing behavior and solves the initial singularity problem during the universe's early evolution. This model achieves a bounce instead, where the universe rapidly contracts and then quickly expands again. The EoS parameter crosses the quintom line in the vicinity of the bouncing position indicating significant changes in the energy density, isotropic pressure, and temperature in the model. The model is highly unstable near the bouncing point. Finally, we analyze the model's dynamic stability in the neighborhood of the bouncing point by examining the sound velocity and the adiabatic index depictions.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1013 ","pages":"Article 116854"},"PeriodicalIF":2.5,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534378","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}

引用次数: 0

Emergent large flavor mixing from canonical and inverse seesaws?

IF 2.5 3区物理与天体物理

Nuclear Physics B Pub Date : 2025-02-26 DOI: 10.1016/j.nuclphysb.2025.116853

Zhi-zhong Xing

引用次数: 0