Annals of Physics最新文献

{"title":"New vacuum boundary effects of massive field theories","authors":"Manuel Asorey,&nbsp;Fernando Ezquerro,&nbsp;Miguel Pardina","doi":"10.1016/j.aop.2025.170195","DOIUrl":"10.1016/j.aop.2025.170195","url":null,"abstract":"<div><div>Analytical arguments suggest that the Casimir energy in 2+1 dimensions for gauge theories decays exponentially with the distance between the boundaries. The phenomenon has also been observed by non-perturbative numerical simulations. The dependence of this exponential decay on the different boundary conditions could help into a better understanding of the infrared behavior of these theories and in particular their mass spectrum. A similar phenomenon is expected to hold in 3+1 dimensions. Motivated by this feature we analyze the dependence of the exponential decay of Casimir energy for different boundary conditions of massive scalar fields in 3+1 dimensional spacetimes. We show that boundary conditions can be classified in two different families according to the rate of exponential decay of the Casimir energy. If the boundary conditions on each boundary are independent (e.g. both boundaries satisfy Dirichlet boundary conditions), the Casimir energy is exponentially decaying two times faster than when the boundary conditions interconnect the two boundary plates (e.g. for periodic or antiperiodic boundary conditions). These results will be useful for a comparison with the Casimir energy in the non-perturbative regime of non-Abelian gauge theories.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170195"},"PeriodicalIF":3.0,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Casimir forces across magnetic plasmas at nuclear separations","authors":"S.K. Panja ,&nbsp;L. Inacio ,&nbsp;S. Pal ,&nbsp;M. Boström","doi":"10.1016/j.aop.2025.170191","DOIUrl":"10.1016/j.aop.2025.170191","url":null,"abstract":"<div><div>A theory and numerical findings are presented on the magnetic Casimir interaction that arises from vacuum fluctuations of the quantized field and its effects at the nuclear scale. We investigate how the zero-temperature Casimir effect at nuclear scales can generate the black-body temperatures required to induce a magnetic electron–positron plasma. The magnetic permeability of the plasma and any magnetic fields present influence the screened Casimir–Yukawa potentials between perfect conducting surfaces. We discuss implications for the magnetic Casimir–Yukawa potential, its screening length, and a magnetic permeability-dependent quantity that resembles the meson mass.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170191"},"PeriodicalIF":3.0,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144891961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Fokker–Planck equation in Schwarzschild spacetime: A supersymmetric connection","authors":"Ojaswini Sharma,&nbsp;Aradhya Shukla","doi":"10.1016/j.aop.2025.170194","DOIUrl":"10.1016/j.aop.2025.170194","url":null,"abstract":"<div><div>We have re-analyzed the dynamics of the thermal potential within Schwarzschild spacetime by employing the Fokker–Planck equation. We demonstrate that the Fokker–Planck equation reduces to a simplified form equivalent to a scaled quantum mechanical problem with a harmonic oscillator potential. In this framework, we highlight an interesting correspondence between supersymmetric quantum mechanics (SUSY QM) and the Fokker–Planck dynamics associated with the Schwarzschild metric. Utilizing the isospectral deformation, an intrinsic feature of SUSY QM, we derive a family of one-parameter isospectral potentials. Notably, this new class of potentials exhibits the same energy spectrum as the original harmonic oscillator potential, but with distinct wavefunctions.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170194"},"PeriodicalIF":3.0,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144893621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Structure and stability of charged anisotropic compact stars in Finch-Skea spacetime within f(R) gravity","authors":"M. Ilyas ,&nbsp;Khalid Masood ,&nbsp;Nehad Ali Shah ,&nbsp;Salma Nawaz","doi":"10.1016/j.aop.2025.170165","DOIUrl":"10.1016/j.aop.2025.170165","url":null,"abstract":"<div><div>This paper investigates anisotropic spherical structures within the framework of metric <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>)</mo></mrow></mrow></math></span> gravity, an extension of general relativity that incorporates functions of the Ricci scalar <span><math><mi>R</mi></math></span> to account for modified gravitational effects. We focus on compact stars, specifically neutron stars and strange stars, assuming the matter content to be electrically charged, and employ Finch-Skea solutions to analyze their properties under the different viable <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>)</mo></mrow></mrow></math></span> gravity models. These models allow us to explore how modifications to gravity influence the internal structure, composition, and behavior of compact stars in the presence of electric charge. We examine key material variables, including density, radial and tangential pressures, anisotropy, and the interplay of forces (gravitational, hydrostatic, anisotropic, and electric force), using graphical analysis to illustrate their behavior. The physical viability of the stellar models is rigorously assessed by evaluating the energy conditions (NEC, WEC, SEC, and DEC) and the equation of state (EoS) parameter. Additionally, we investigate the role of anisotropy and electric charge in determining the stability and structural properties of these compact objects. By comparing our results with those of general relativity, we highlight the distinctive implications of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>)</mo></mrow></mrow></math></span> gravity on compact stars. This study aims to advance our understanding of how modified gravity theories, coupled with electric charge, could alter the properties and dynamics of compact astrophysical objects, providing insights into the interplay between gravity, matter, anisotropy, and electromagnetic effects in extreme environments.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170165"},"PeriodicalIF":3.0,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Revisiting the gravitational atom: Exact scalar cloud solution","authors":"David Senjaya","doi":"10.1016/j.aop.2025.170192","DOIUrl":"10.1016/j.aop.2025.170192","url":null,"abstract":"<div><div>In this work, we investigate perfectly bound states of the Klein–Gordon equation, well-known as the neutral scalar cloud, in the Dyonic Kerr-Sen black hole (DKSBH) spacetime. Because the system closely mimics the proton-electron structure in a hydrogen atom, the black hole bearing a boson cloud is referred as a gravitational atom. DKSBH itself is the most general 3+1 dimensional black hole solution of the Einstein–Maxwell-Dilaton–Axion theory, generalizes all Kerr-family solutions, including Kerr, Kerr–Newmann, Kerr-EMDA, and their respective dilatonic versions. Conventionally, the scalar cloud is investigated via approximation technique known as the AAM technique, which works in ultralight scalar field and low black hole’s spin regime. In this work, we aim to revisit the theory of the black hole’s scalar cloud, by firstly finding and investigating the exact solution to the massive Klein–Gordon equation in the black hole spacetime. We find that the scalar cloud exact solution is obtained in terms of the Confluent Heun function and its exact spectrum corresponds to the polynomial condition of the radial solution. Working with exact solution, we can examine the scalar cloud without being troubled by ultralight scalar mass or the slow black hole limit. Finally, we discover that the exact characteristic frequency of the black hole’s scalar cloud takes into account the effect comes from both the black hole’s event horizon and the Cauchy horizon.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170192"},"PeriodicalIF":3.0,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"On the possibility of a Erbacher-type reduction in the geometric theory of spacetimes","authors":"Daniel de la Fuente ,&nbsp;Rafael M. Rubio ,&nbsp;Jose Torrente-Teruel","doi":"10.1016/j.aop.2025.170183","DOIUrl":"10.1016/j.aop.2025.170183","url":null,"abstract":"<div><div>Although Erbacher’s reduction Theorem on Riemannian isometric immersions in the space forms is known to hold in the realm of semi-Riemannian geometry, the hypotheses cannot be translated to the non-relativistic context of Galilean geometry. In this paper, we prove a Erbacher-type reduction result in both Lorentzian and Galilean frameworks: the worldline of any Unchanged Direction observer in a spacetime with certain infinitesimal symmetries can be embedded in a 3-dimensional totally geodesic submanifold with Galilean or Lorentzian structure.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170183"},"PeriodicalIF":3.0,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Contribution of geometry and non-Abelian gauge fields to Aharonov-Bohm scattering of massless fermions in graphene with disclinations","authors":"M.J. Bueno ,&nbsp;G.Q. Garcia ,&nbsp;A.M. de M. Carvalho ,&nbsp;C. Furtado","doi":"10.1016/j.aop.2025.170182","DOIUrl":"10.1016/j.aop.2025.170182","url":null,"abstract":"<div><div>We investigate the scattering of massless Dirac quasiparticles in graphene in the presence of topological disclinations. The defects are modeled within the framework of the geometric theory of defects, modifying the underlying lattice structure through a conical geometry. Starting from the tight-binding approach, we derive an effective Dirac equation that incorporates both the curvature induced by the disclination and an associated non-Abelian gauge field. Analytical solutions are obtained, and the resulting phase shifts and differential cross-sections are computed. Our findings reveal that the disclination strongly modifies the interference pattern, with the parameter <span><math><mi>α</mi></math></span> playing a central role in controlling the angular structure of the scattering. These results highlight the interplay between geometry and gauge fields in determining quantum transport in defected graphene.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170182"},"PeriodicalIF":3.0,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Infrared Extended Uncertainty Principle corrections and quintessence-induced topology of Reissner–Nordström AdS black holes","authors":"Y. Sekhmani ,&nbsp;G.G. Luciano ,&nbsp;S.N. Gashti ,&nbsp;A. Baruah","doi":"10.1016/j.aop.2025.170187","DOIUrl":"10.1016/j.aop.2025.170187","url":null,"abstract":"<div><div>We present a unified topological and geometric analysis of charged Anti-de Sitter (AdS) black holes immersed in a quintessence field, incorporating infrared gravitational corrections arising from the Extended Uncertainty Principle (EUP). The latter modifies the standard Heisenberg uncertainty relation by introducing a minimal momentum/maximal length scale, which effectively captures long-wavelength quantum gravitational effects relevant to black hole thermodynamics in curved spacetimes. We derive analytic expressions for the corrected Hawking temperature, entropy and heat capacity in terms of the EUP deformation parameter. Furthermore, the inclusion of quintessence, characterized by barotropic indices <span><math><mrow><msub><mrow><mi>ω</mi></mrow><mrow><mi>q</mi></mrow></msub><mo>=</mo><mo>−</mo><mfrac><mrow><mn>2</mn></mrow><mrow><mn>3</mn></mrow></mfrac></mrow></math></span> and <span><math><mrow><msub><mrow><mi>ω</mi></mrow><mrow><mi>q</mi></mrow></msub><mo>=</mo><mo>−</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>3</mn></mrow></mfrac></mrow></math></span>, modifies the black hole metric function. By studying the relaxation-time function <span><math><mrow><mi>τ</mi><mrow><mo>(</mo><msub><mrow><mi>r</mi></mrow><mrow><mi>h</mi></mrow></msub><mo>)</mo></mrow></mrow></math></span>, we identify a number of inflection points that depends sensitively on the equation of state parameter of quintessence, indicating a nontrivial impact of the latter on the black hole phase structure. Applying Duan’s topological current method to the off-shell free energy, we compute integer-valued winding numbers associated with each thermodynamic critical point. A parallel topological analysis of the photon sphere assigns charges <span><math><mrow><mo>±</mo><mn>1</mn></mrow></math></span> to individual light rings, showing that quintessence effects can trigger the splitting or merging of photon spheres, while preserving the total exterior topological charge of <span><math><mrow><mo>−</mo><mn>1</mn></mrow></math></span>.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170187"},"PeriodicalIF":3.0,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"A preference for dynamical phantom dark energy using one-parameter model with Planck, DESI DR1 BAO and SN data","authors":"Ramy Fikri ,&nbsp;Esraa Elkhateeb ,&nbsp;E.I. Lashin ,&nbsp;Waleed El Hanafy","doi":"10.1016/j.aop.2025.170190","DOIUrl":"10.1016/j.aop.2025.170190","url":null,"abstract":"<div><div>Baryon Acoustic Oscillation (BAO) provides a powerful tool to measure cosmic expansion and consequently the nature of the Dark Energy (DE). Recent precise BAO measurements by Dark Energy Spectroscopic Instrument data release 1 (DESI DR1), when combined with Cosmic Microwave Background (CMB) data from Planck and Supernovae of Type Ia (SN Ia), favor evolving dark energy over cosmological constant. This result is strongly related to the assumed priors on the Chevallier–Polarski–Linder (CPL) parametrization of DE. We test another parametrization which introduces two free parameters <span><math><mi>n</mi></math></span> and <span><math><mi>α</mi></math></span>, only <span><math><mi>n</mi></math></span> is independent. Thus, it reduces the parameter space compared to the CPL model, which derives a more robust preference for evolving DE, if any. The model potentially produces three cosmological scenarios according to the values of its parameters. For <span><math><mrow><mi>n</mi><mo>=</mo><mn>3</mn></mrow></math></span>, the <span><math><mi>Λ</mi></math></span>CDM model is recovered, quintessence for <span><math><mrow><mi>n</mi><mo>&lt;</mo><mn>3</mn></mrow></math></span>, and phantom for <span><math><mrow><mi>n</mi><mo>&gt;</mo><mn>3</mn></mrow></math></span>. In the present study, we test the model on the background level, and, to our knowledge for the first time, on the linear perturbation level. Bayesian evidence analysis shows a weak preference (<span><math><mrow><mo>ln</mo><mi>B</mi><mo>≤</mo><mn>1</mn><mo>.</mo><mn>8</mn></mrow></math></span>) for dynamical DE in the phantom regime over the cosmological constant DE using Planck, DESI, and PantheonPlus &amp; SH0ES data, similarly the AIC analysis supports dynamical DE scenario for the same data. The model predicts current phantom DE <span><math><mrow><msub><mrow><mi>w</mi></mrow><mrow><mi>d</mi><mi>e</mi><mo>,</mo><mn>0</mn></mrow></msub><mo>=</mo><mo>−</mo><mn>1</mn><mo>.</mo><mn>073</mn><mo>±</mo><mn>0</mn><mo>.</mo><mn>032</mn></mrow></math></span> and <span><math><mrow><msub><mrow><mi>H</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>=</mo><mn>70</mn><mo>.</mo><mn>9</mn><mo>±</mo><mn>1</mn><mo>.</mo><mn>4</mn></mrow></math></span> km/s/Mpc when Planck+DESI data is used, which decreases the tension with <span><math><msub><mrow><mi>H</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> local measurements to <span><math><mrow><mn>1</mn><mo>.</mo><mn>2</mn><mi>σ</mi></mrow></math></span> level.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170190"},"PeriodicalIF":3.0,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Comment on “Charged Zipoy-Voorhees metric in string theory”","authors":"Ozay Gurtug ,&nbsp;Mustafa Halilsoy ,&nbsp;Mert Mangut","doi":"10.1016/j.aop.2025.170186","DOIUrl":"10.1016/j.aop.2025.170186","url":null,"abstract":"<div><div>In a recent paper by Yunusov et al. (2025) it is claimed that the charged Zipoy–Voorhees (ZV) metric found in a paper by Gurtug et al. (2022) does not satisfy the Einstein–Maxwell (EM) equations. It is our aim in this comment to show that this claim is invalid. Nevertheless, their stringy EM extension of the ZV metric remains valid.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"481 ","pages":"Article 170186"},"PeriodicalIF":3.0,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}