Annals of Physics最新文献

{"title":"Testing strong gravitational lensing effects of supermassive black holes with string-inspired metric: Observational signatures and EHT constraints","authors":"Amnish Vachher , Shafqat Ul Islam , Rahul Kumar Walia , Sushant G. Ghosh","doi":"10.1016/j.aop.2025.170084","DOIUrl":"10.1016/j.aop.2025.170084","url":null,"abstract":"<div><div>We analyze gravitational lensing in the strong field limit for spherically symmetric string-inspired Euler–Heisenberg black holes, characterized by magnetic charge (<span><math><mi>q</mi></math></span>) and Einstein–Maxwell-dilaton coupling constants (<span><math><mrow><mi>α</mi><mo>,</mo><mi>β</mi></mrow></math></span>) from the low-energy limit of heterotic string theory. Our results show that the string coupling has a weak impact on the positions of relativistic images, deflection angles, photon orbit radii, and shadow sizes, making these black holes indistinguishable from the Gibbons–Maeda–Garfinkle–Horowitz–Strominger (GMGHS) black holes with the same mass and charge. Compared to Schwarzschild black holes, the string-inspired Euler–Heisenberg black holes exhibit smaller deflection angles, decreasing with increasing charge. Moreover, the time delay for Sgr A * and M87 * can reach <span><math><mrow><mn>11</mn><mo>.</mo><mn>477</mn></mrow></math></span> and <span><math><mrow><mn>17349</mn><mo>.</mo><mn>8</mn></mrow></math></span> min, respectively, at <span><math><mrow><mi>q</mi><mo>=</mo><mn>0</mn><mo>.</mo><mn>1</mn></mrow></math></span> and <span><math><mrow><mi>η</mi><mo>=</mo><mo>−</mo><mn>1</mn></mrow></math></span>, deviating from Schwarzschild black holes by <span><math><mrow><mn>0</mn><mo>.</mo><mn>0198</mn></mrow></math></span> and <span><math><mrow><mn>28</mn><mo>.</mo><mn>9</mn></mrow></math></span> min, which are not very significant. For Sgr A* and M87*, we determine <span><math><msub><mrow><mi>θ</mi></mrow><mrow><mi>∞</mi></mrow></msub></math></span> range within <span><math><mrow><mrow><mo>(</mo><mn>11</mn><mo>.</mo><mn>52</mn><mo>,</mo><mn>26</mn><mo>.</mo><mn>33</mn><mo>)</mo></mrow><mspace></mspace><mi>μ</mi></mrow></math></span>as, and <span><math><mrow><mrow><mo>(</mo><mn>9</mn><mo>.</mo><mn>17</mn><mo>,</mo><mn>19</mn><mo>.</mo><mn>78</mn><mo>)</mo></mrow><mspace></mspace><mi>μ</mi></mrow></math></span>as respectively, with angular separations <span><math><mi>s</mi></math></span> ranging from <span><math><mrow><mo>(</mo><mn>3</mn><mo>.</mo><mn>29</mn><mtext>–</mtext><mn>6</mn><mo>.</mo><mn>85</mn><mo>)</mo></mrow></math></span> nas for Sgr A* and <span><math><mrow><mrow><mo>(</mo><mn>2</mn><mo>.</mo><mn>47</mn><mtext>–</mtext><mn>5</mn><mo>.</mo><mn>15</mn><mo>)</mo></mrow><mspace></mspace></mrow></math></span>nas for M87*. EHT bounds on the <span><math><msub><mrow><mi>θ</mi></mrow><mrow><mi>s</mi><mi>h</mi></mrow></msub></math></span> of Sgr A* and M87* within the <span><math><mrow><mn>1</mn><mi>σ</mi></mrow></math></span> interval bound the <span><math><mi>q</mi></math></span> as: for Sgr A* <span><math><mrow><mn>0</mn><mo>.</mo><mn>54109</mn><mo>≤</mo><mi>q</mi><mo>≤</mo><mn>0</mn><mo>.</mo><mn>7796</mn></mrow></math></span> and for M87* <span><math><mrow><mn>0</mn><mo><</mo><mi>q</mi><mo>≤</mo><mn>0</mn><mo>.</mo><mn>29107</mn></mrow></math></span>, while in both the cases, we did not find any bound on the","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"480 ","pages":"Article 170084"},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166076","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 class of 2 × 2 correlated random-matrix models with Brody spacing distribution","authors":"Jamal Sakhr","doi":"10.1016/j.aop.2025.170080","DOIUrl":"10.1016/j.aop.2025.170080","url":null,"abstract":"<div><div>A class of 2 × 2 random-matrix models is introduced for which the Brody distribution is the exact eigenvalue spacing distribution. The matrix elements consist of constrained finite sums of an exponential random variable raised to various powers that depend on the Brody parameter. The random matrices introduced here differ from those of the Gaussian Orthogonal Ensemble (GOE) in three important ways: the matrix elements are not independent and identically distributed (i.e., not IID) nor Gaussian-distributed, and the matrices are not necessarily real and/or symmetric. The first two features arise from dropping the classical independence assumption, and the third feature stems from dropping the quantum-mechanical conditions imposed in the construction of the GOE. In particular, the hermiticity condition, which in the present class of models, is a sufficient but not necessary condition for the eigenvalues to be real, is not imposed. Consequently, complex non-Hermitian 2 × 2 random matrices with real or complex eigenvalues can also have spacing distributions that are intermediate between those of the Poisson and Wigner classes. Numerical examples are provided for different types of random matrices, including complex-symmetric matrices with real or complex-conjugate eigenvalues. Various generalizations and extensions are discussed including a simple modification that effectuates cross-over transitions between other classes of eigenvalue spacing statistics. The case of a cross-over transition between semi-Poisson and Ginibre spacing statistics is presented as a novel example.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"480 ","pages":"Article 170080"},"PeriodicalIF":3.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177572","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":"Chaotic interaction between thermodynamic systems","authors":"Ekrem Aydiner","doi":"10.1016/j.aop.2025.170079","DOIUrl":"10.1016/j.aop.2025.170079","url":null,"abstract":"<div><div>In previous study (Aydiner, 2025), we proposed a new physical law applicable to both particle and thermodynamical systems. Additionally, we introduced a physical definition of chaos and self-organization. In the present work, we extend this novel interaction scheme to various thermodynamical systems in order to test the universality of the proposed law. Our results demonstrate that the dynamics of these systems also exhibit chaotic behavior under different conditions. We discussed the relationship between chaotic dynamics and the least action, and for the first time, we proposed the <em>Chaotic Action Principle</em> (CAP). Furthermore, we examined the validity of the physical and philosophical foundations of this new law and the associated definition of chaos. Finally, based on CAP, we proposed a new conceptual definition of complexity.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"480 ","pages":"Article 170079"},"PeriodicalIF":3.0,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131427","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":"Antiferromagnetic diamond network as an efficient spin filter: Proposition of a spin-specific semi-conducting behavior","authors":"Debjani Das Gupta,&nbsp;Santanu K. Maiti","doi":"10.1016/j.aop.2025.170077","DOIUrl":"10.1016/j.aop.2025.170077","url":null,"abstract":"<div><div>We propose, for the first time, that an array of diamond plaquettes, each possessing vanishing net magnetization, can achieve complete spin polarization over a broad bias window. Furthermore, this system can be utilized to realize spin-specific semiconducting behavior. We describe the antiferromagnetic diamond network within a tight-binding framework, where spin-dependent scattering arises due to the interaction between itinerant electrons and local magnetic moments at different lattice sites. The mechanism underlying spin filtration relies on the specific arrangement of magnetic moments within individual plaquettes. We systematically investigate the spin polarization phenomenon under various input conditions, examining its dependence on network size, system temperature, and the magnetic flux threading each plaquette. Due to the network’s geometry, we identify a sharply localized, highly degenerate energy level coexisting with conducting states. By tuning physical parameters, a small energy gap can be established between these degenerate localized states and the conducting energy band, enabling spin-specific <span><math><mi>p</mi></math></span>-type and <span><math><mi>n</mi></math></span>-type semiconducting behavior. Our findings offer a novel approach for designing future spintronic devices based on similar antiferromagnetic networks.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"480 ","pages":"Article 170077"},"PeriodicalIF":3.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134702","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":"Particle production in HRG with thermodynamically consistent EoS and partially deformable hadrons","authors":"Sameer Ahmad Mir ,&nbsp;Iqbal Mohi Ud Din ,&nbsp;Nasir Ahmad Rather ,&nbsp;Saeed Uddin ,&nbsp;M. Farooq Mir","doi":"10.1016/j.aop.2025.170065","DOIUrl":"10.1016/j.aop.2025.170065","url":null,"abstract":"<div><div>In the present work, we analyze several strange as well as non-strange relative hadronic yields obtained in the ultra-relativistic heavy-ion collisions (URHIC) experiments over a wide range of center-of-mass collision energy (<span><math><msqrt><mrow><msub><mrow><mi>s</mi></mrow><mrow><mi>N</mi><mi>N</mi></mrow></msub></mrow></msqrt></math></span>). We invoke the formation of a hot and dense hadronic resonance gas (HRG) in the final stage following the URHIC. We use an earlier proposed thermodynamically consistent approach for obtaining the equation of state (EoS) of a HRG. It takes into account an important aspect of the hadronic interaction, viz., the hadronic hard-core repulsion, by assigning hard-core volumes to the hadrons, leading to an excluded volume (EV) type effect. We have invoked the bag model approach to assign hard-core volumes to baryons (antibaryons) while treating mesons to be point particles. We employ ansatz to obtain the dependence of the temperature (<em>T</em>) and baryon chemical potential (BCP) of HRG system on the center-of-mass energy in URHIC. We also find strong evidence of a double freeze-out scenario, corresponding to baryons (antibaryons) and mesons, respectively. Strangeness (anti-strangeness) imbalance factor is also seen to play an important role in explaining the ratio of strange hadrons to the non-strange ones. The HRG model can explain the experimental data on various relative hadronic multiplicities quite satisfactorily over a wide range of <span><math><msqrt><mrow><msub><mrow><mi>s</mi></mrow><mrow><mi>N</mi><mi>N</mi></mrow></msub></mrow></msqrt></math></span>, ranging from the lowest RHIC energies to the highest LHC energies using one set of model parameters by obtaining the best theoretical fits to the experimental data using the minimum <span><math><msup><mrow><mi>χ</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>/dof method.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"480 ","pages":"Article 170065"},"PeriodicalIF":3.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131454","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":"Insights of traversable wormhole geometries under complexity factor and different equations of state in modified gravity","authors":"Tayyab Naseer ,&nbsp;M. Sharif ,&nbsp;Mona Faiza ,&nbsp;Kottakkaran Sooppy Nisar ,&nbsp;Mona Mahmoud","doi":"10.1016/j.aop.2025.170076","DOIUrl":"10.1016/j.aop.2025.170076","url":null,"abstract":"<div><div>The focus of this investigation is to check whether charged traversable wormholes exist in the realm of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity. Considering the Morris–Thorne spacetime, we develop the wormhole geometry and derive the gravitational equations representing anisotropic fluid setup. To fulfill the objective of this study, we further assume a couple of equations of state to determine some necessary parameters linked with the wormhole models. This leads us to see that this cosmic fluid might provide an interesting explanation for the phenomenon of wormhole geometries. By employing both equations of state, we deduce the shape functions and analyze their consistency by satisfying fundamental conditions. We observe that the resulting functions meet key criteria and link two regions of spacetime that converge to asymptotic flatness. Afterward, we examine their practicality by checking if they violate or comply with the null energy conditions. In addition to that, we study the gravitational mass, complexity factor, embedding diagrams, and the volume integral quantifier. The results of this investigation imply that the constructed wormhole solutions adhere to the essential criteria, permitting their existence in the modified gravity under the considered standard model.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170076"},"PeriodicalIF":3.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106098","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":"Corrigendum to “Quantum unital Otto heat engines: Using Kirkwood–Dirac quasi-probability for the engine’s coherence to stay alive” [Ann. Phys. Volume 473, February 2025, 169889]","authors":"Abdelkader El Makouri ,&nbsp;Abdallah Slaoui ,&nbsp;Rachid Ahl Laamara","doi":"10.1016/j.aop.2025.170081","DOIUrl":"10.1016/j.aop.2025.170081","url":null,"abstract":"","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170081"},"PeriodicalIF":3.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099750","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":"The propagator field theory revisited: A Lorentz symmetry breaking approach","authors":"R. Cartas-Fuentevilla ,&nbsp;S. González-Salud ,&nbsp;R. Bárcena-Ramos ,&nbsp;J. Berra-Montiel","doi":"10.1016/j.aop.2025.170075","DOIUrl":"10.1016/j.aop.2025.170075","url":null,"abstract":"<div><div>It is well known that the propagator for a massive scalar field is ill-defined in the coordinate space for <span><math><mrow><mi>d</mi><mo>≥</mo><mn>2</mn></mrow></math></span>, in particular it diverges at the light-cone. We show that by using Lorentz symmetry breaking weighted measures, an infinite family of propagators can be constructed in an infinitesimal strip near the light-cone, which are labeled by the weight of the measure; hence, the results will provide a finite quantum amplitude for a massive particle for propagating on the light-cone. The propagators regarded as smooth two-points functions, increase within a region smaller than the Compton wavelength, and decrease beyond that wavelength, eventually dropping off for large arguments. Although the time ordered propagators retain negative values regions for arbitrary values of the weight <span><math><mi>s</mi></math></span> for the measures, the restriction <span><math><mrow><mn>2</mn><mo>&lt;</mo><mi>s</mi><mo>≤</mo><mi>d</mi><mo>+</mo><mn>1</mn></mrow></math></span> will guarantee the positivity for the amplitudes near the light cone.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170075"},"PeriodicalIF":3.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106096","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":"Nonuniversal equation of state for Rabi-coupled bosonic gases: A droplet phase","authors":"Emerson Chiquillo","doi":"10.1016/j.aop.2025.170071","DOIUrl":"10.1016/j.aop.2025.170071","url":null,"abstract":"<div><div>Through an effective quantum field theory including zero temperature Gaussian fluctuations we derive analytical and explicit expressions for the equation of state of three-dimensional ultracold Rabi-coupled two-component bosonic gases with nonuniversal corrections to the interactions. At mean-field level the system presents two ground-states, one symmetric and one non-symmetric or unbalanced. For the symmetric ground state, in the regime where inter-species interactions are weakly attractive and subtly higher than repulsive intra-species, the instability by collapse is avoided by the contribution arising from Gaussian fluctuations, driving thus to formation of a liquidlike phase or droplet phase. This self-bound state is crucially affected by the dependence on the nonuniversal corrections to the interactions, which acts controlling the droplet stability. By tuning the ratio between the inter-species scattering length and the intra-species scattering lengths or the nonuniversal contribution to the interactions we address and establish conditions under which the formation and stability of self-bound Rabi-coupled droplets with nonuniversal corrections to the interactions is favorable.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170071"},"PeriodicalIF":3.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123267","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":"Multiple localization transitions in a dimerized Kitaev superconductor model with random-dimer disorder","authors":"Yuan Yang,&nbsp;Zhengxuan Ding,&nbsp;Xiaobing Li","doi":"10.1016/j.aop.2025.170070","DOIUrl":"10.1016/j.aop.2025.170070","url":null,"abstract":"<div><div>Recently, the reentrant localization has been theoretically and experimentally observed in a random-dimer disordered Su–Schrieffer–Heeger (SSH) lattice (Zuo et al., 2022; Xu et al., 2024). Here, We study the influence of random-dimer disorder in a one-dimensional dimerized Kitaev superconductor model, which is a generalized SSH model with <span><math><mi>p</mi></math></span>-wave superconducting pairing term. We show that the random-dimer disorder can lead to a topological Anderson insulator phase from a trivial phase, which can be confirmed by the real-space winding number together with Majorana zero modes in the energy spectrum. Furthermore, the inverse participation ratio, normalized participation ratio, and fractal dimension are calculated to characterize the localization properties of the system. The localization transition occurs two or three times with increasing the disorder strength. These results demonstrate that the disorder-induced topological phase transitions are not tied to the multiple localization–delocalization transitions.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170070"},"PeriodicalIF":3.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114855","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}