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Shadows for Kerr–Sen–Taub–NUT black holes with Manko–Ruiz parameter
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-07 DOI: 10.1016/j.aop.2025.170015
Haryanto M. Siahaan
{"title":"Shadows for Kerr–Sen–Taub–NUT black holes with Manko–Ruiz parameter","authors":"Haryanto M. Siahaan","doi":"10.1016/j.aop.2025.170015","DOIUrl":"10.1016/j.aop.2025.170015","url":null,"abstract":"<div><div>In this paper, we explore the Kerr–Sen–Taub–NUT spacetime with the inclusion of the Manko–Ruiz parameter. We demonstrate the separability of the Hamilton–Jacobi equation for a classical test particle in this spacetime and, using the null Hamilton–Jacobi equation, derive a set of equations that define the black hole shadow’s boundary. Our analysis reveals that the shadow’s shape is influenced by variations in the spacetime parameters, including the Hassan–Sen transformation parameter, which corresponds to the black hole’s electric charge, as well as the NUT charge and rotational parameter. Additionally, we highlight the impact of the Manko–Ruiz parameter on the shadow’s deformation, offering new insights into its role in shaping the Kerr–Sen–Taub–NUT spacetime geometry.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"478 ","pages":"Article 170015"},"PeriodicalIF":3.0,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785556","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}
引用次数: 0
Shot-noise power from a topological superconductor with chiral symmetry
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-04 DOI: 10.1016/j.aop.2025.170013
Marília S.M. Barros, Isacc A. Saturno Junior, Edson M. Alves, Edivan A. da Silva, Ailton F. Macedo Junior, Antonio R. de C. Romaguera, Anderson L.R. Barbosa
{"title":"Shot-noise power from a topological superconductor with chiral symmetry","authors":"Marília S.M. Barros,&nbsp;Isacc A. Saturno Junior,&nbsp;Edson M. Alves,&nbsp;Edivan A. da Silva,&nbsp;Ailton F. Macedo Junior,&nbsp;Antonio R. de C. Romaguera,&nbsp;Anderson L.R. Barbosa","doi":"10.1016/j.aop.2025.170013","DOIUrl":"10.1016/j.aop.2025.170013","url":null,"abstract":"<div><div>We study the electronic transport through a junction of normal metal/topological superconductors. In the Random Matrix Theory (RMT) framework, the symmetric class BDI describes the electronic transport through the junction, and it is associated with a topological number <span><math><mrow><mi>Q</mi><mo>∈</mo><mi>Z</mi></mrow></math></span>. Using RMT, we describe the universal electronic properties of the junction between a normal metal and a topological superconductor. Specifically, we calculate the average conductance, shot noise power, and probability distributions. In particular, we show that the ratio between shot-noise power and conductance quantum interference corrections (“Fano factor”) changes the signal because of the effect of the topological quantum number <span><math><mi>Q</mi></math></span>. Numerical calculations further validate our analytical results.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"478 ","pages":"Article 170013"},"PeriodicalIF":3.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783846","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}
引用次数: 0
Cosmic acceleration driven by dark matter self-interactions: A phenomenological treatment
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-04 DOI: 10.1016/j.aop.2025.170012
A. Kazım Çamlıbel
{"title":"Cosmic acceleration driven by dark matter self-interactions: A phenomenological treatment","authors":"A. Kazım Çamlıbel","doi":"10.1016/j.aop.2025.170012","DOIUrl":"10.1016/j.aop.2025.170012","url":null,"abstract":"<div><div>We explore the idea that cosmic acceleration may be a byproduct of late-time effects like structure formation in two steps. First, we consider the equation of state for an inhomogeneous cosmic fluid, which may lead to a Gedanken-model for cosmic evolution, where dark matter is strongly self-interacting and stays in a plasma state until late stages of the cosmic evolution. After decoupling, it condensates to super-structures with cosmic voids similar to the current picture of the universe, introducing a negative pressure term in relation to self-interaction strength. Secondly, we carry out a cosmological analysis inspired by this scenario via a phenomenological ansatz that exhibits a transient behavior. In this analysis, we use the recent Type Ia supernova compilation and high redshift quasar data and compare the results to that of <span><math><mi>Λ</mi></math></span>CDM. It turns out that proposed model can solve the quasar Hubble diagram tension.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"478 ","pages":"Article 170012"},"PeriodicalIF":3.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799063","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}
引用次数: 0
Landau levels for a non-relativistic spin 1/2 particle in a cosmic string spacetime
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-03-28 DOI: 10.1016/j.aop.2025.170011
M.D. de Oliveira, Alexandre G.M. Schmidt
{"title":"Landau levels for a non-relativistic spin 1/2 particle in a cosmic string spacetime","authors":"M.D. de Oliveira,&nbsp;Alexandre G.M. Schmidt","doi":"10.1016/j.aop.2025.170011","DOIUrl":"10.1016/j.aop.2025.170011","url":null,"abstract":"<div><div>This work investigates the Landau quantization of a spin-<span><math><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></math></span> particle using the Pauli equation in the presence of a cosmic string. Due to the coupling of spin with the magnetic field, the radial differential equations for the two components of the Pauli spinor differ. Consequently, the upper and lower components of the spinor are distinct yet yield the same quantized energy spectrum with spin corrections. We perform a graphical analysis of the eigenenergies and radial probability density, considering a cosmic string modeled both with and without an internal structure.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"478 ","pages":"Article 170011"},"PeriodicalIF":3.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738146","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}
引用次数: 0
Reflections of topological properties in the planar-Hall response for semimetals carrying pseudospin-1 quantum numbers 携带伪ospin-1 量子数的半金属在平面-霍尔响应中的拓扑特性反映
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-03-28 DOI: 10.1016/j.aop.2025.170010
Firdous Haidar, Ipsita Mandal
{"title":"Reflections of topological properties in the planar-Hall response for semimetals carrying pseudospin-1 quantum numbers","authors":"Firdous Haidar,&nbsp;Ipsita Mandal","doi":"10.1016/j.aop.2025.170010","DOIUrl":"10.1016/j.aop.2025.170010","url":null,"abstract":"<div><div>We continue our investigations of the nature of the linear-response tensors in planar-Hall and planar-thermal Hall configurations, involving three-dimensional nodal-point semimetals, by considering here nodes hosting pseudospin-1 quasiparticles. Such systems exemplify multifold semimetals, as they have three bands crossing at a nodal point. We derive the explicit expressions of the electric, thermoelectric, and thermal coefficients, when the nodes are subjected to the combined influence of an electric field (and/or temperature gradient) and a weak (i.e., nonquantizing) magnetic field. In order to have a complete description, we consider the effects of the Berry curvature and the orbital magnetic moment on an equal footing, both of which originate from the underlying topological features of the bandstructure. Going beyond our previous works, we determine the out-of-plane response comprising the intrinsic anomalous-Hall and the Lorentz-force-contributed currents, and chalk out the effects of internode scatterings as well. Our theoretical explorations shed light on the mechanisms of transport in multifold semimetals, which are being investigated in contemporary experiments.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"478 ","pages":"Article 170010"},"PeriodicalIF":3.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759236","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}
引用次数: 0
Spontaneous emission in a coupled cavity array featuring random-dimer disorder
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-03-25 DOI: 10.1016/j.aop.2025.170009
Mariana O. Monteiro, Guilherme M.A. Almeida, Francisco A.B.F. de Moura
{"title":"Spontaneous emission in a coupled cavity array featuring random-dimer disorder","authors":"Mariana O. Monteiro,&nbsp;Guilherme M.A. Almeida,&nbsp;Francisco A.B.F. de Moura","doi":"10.1016/j.aop.2025.170009","DOIUrl":"10.1016/j.aop.2025.170009","url":null,"abstract":"<div><div>We study the emission dynamics of a two-level atom interacting with a large array of coupled cavities via the central site. The local frequencies of the cavities follow a random dimer model, where two distinct frequency values are sorted across the array, with one value occurring only between pairs of adjacent sites. This configuration results in the coexistence of localized and quasi-extended field modes, which we exploit to measure the Markovian character of the amplitude-damping channel. By tuning the correlation length of the disorder, we observe a transition from non-Markovian to Markovian decay at specific values of the atomic frequency. In this setup, the atom serves as a probe for the localization properties of the array, establishing a connection between the theory of open quantum systems and quantum transport in low-dimensional systems.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"477 ","pages":"Article 170009"},"PeriodicalIF":3.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705112","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}
引用次数: 0
Vacuum state perturbed by an oscillon: Composite configurations in ϕ4 model
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-03-24 DOI: 10.1016/j.aop.2025.170008
Fabiano C. Simas , Eduardo da Hora
{"title":"Vacuum state perturbed by an oscillon: Composite configurations in ϕ4 model","authors":"Fabiano C. Simas ,&nbsp;Eduardo da Hora","doi":"10.1016/j.aop.2025.170008","DOIUrl":"10.1016/j.aop.2025.170008","url":null,"abstract":"<div><div>We examine the evolution of a vacuum configuration when perturbed by an oscillon. We consider the <span><math><msup><mrow><mi>ϕ</mi></mrow><mrow><mn>4</mn></mrow></msup></math></span> scenario with a single scalar field only. For highly excited oscillons, we find that new composite solutions appear. They are formed by multiple antikink-kink pairs and a centered reminiscent oscillon. The overall process gives rise to a resonant structure whose pattern resembles that of a genuine kink-antikink scattering. We then approximate the initial oscillon by a lumplike profile constructed as a kink-antikink pair. We map the numerical results previously obtained. The developments proposed here may contribute to the understanding of the mechanism through which an oscillon decay reproduces the structure typically related to a kink-antikink collision.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"478 ","pages":"Article 170008"},"PeriodicalIF":3.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704945","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}
引用次数: 0
Impact of extended gravity theories on accretion dynamics and observables in black hole
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-03-22 DOI: 10.1016/j.aop.2025.170006
Shahid Chaudhary , Shahi Rome , Muhammad Danish Sultan , Ahmadjon Abdujabbarov , Awatef Abidi , Yousef Mohammad Alanazi , Abdulrahman Bin Jumah
{"title":"Impact of extended gravity theories on accretion dynamics and observables in black hole","authors":"Shahid Chaudhary ,&nbsp;Shahi Rome ,&nbsp;Muhammad Danish Sultan ,&nbsp;Ahmadjon Abdujabbarov ,&nbsp;Awatef Abidi ,&nbsp;Yousef Mohammad Alanazi ,&nbsp;Abdulrahman Bin Jumah","doi":"10.1016/j.aop.2025.170006","DOIUrl":"10.1016/j.aop.2025.170006","url":null,"abstract":"<div><div>We examine a thin accretion disk surrounding a static, spherically symmetric black hole within the framework of Einstein–Gauss–Bonnet massive gravity theory. Our focus is on the motion of particles in circular orbits around the black hole in this spacetime. Specifically, we study the geodesic motion of particles confined to the equatorial plane, which contributes to the formation of the thin accretion disk, to explore their innermost stable circular orbits and energy flux distribution. To provide a comprehensive analysis of our study, we present density plots of the effective potential, specific energy, angular momentum, angular velocity, and radiation flux. The contour plots reveal that the massive gravity and Gauss–Bonnet parameters significantly influence the gravitational pull and energy dissipation within the accretion disk. These effects have important implications for the observational properties of black holes in extended gravity theories, impacting the disk’s brightness and thermal spectrum. Utilizing the well-established Novikov–Thorne model for accretion, we investigate the impact of Gauss–Bonnet and massive gravity parameters on the direct and secondary images of the black hole’s accretion disk at various observation angles. Notably, we observe significant deviations from standard black hole solutions, such as Schwarzschild or Reissner–Nordstrm.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"477 ","pages":"Article 170006"},"PeriodicalIF":3.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685067","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}
引用次数: 0
Scaling of Fock space propagator in quasiperiodic many-body localizing systems
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-03-22 DOI: 10.1016/j.aop.2025.170001
Soumi Ghosh , Jagannath Sutradhar , Subroto Mukerjee , Sumilan Banerjee
{"title":"Scaling of Fock space propagator in quasiperiodic many-body localizing systems","authors":"Soumi Ghosh ,&nbsp;Jagannath Sutradhar ,&nbsp;Subroto Mukerjee ,&nbsp;Sumilan Banerjee","doi":"10.1016/j.aop.2025.170001","DOIUrl":"10.1016/j.aop.2025.170001","url":null,"abstract":"<div><div>Recently many-body localized systems have been treated as a hopping problem on a Fock space lattice with correlated disorder, where the many-body eigenstates exhibit multi-fractal character. The many-body propagator in Fock space has been shown to be useful for capturing this multifractality and extracting a Fock-space localization length for systems with random disorder in real space. Here we study a one-dimensional interacting system of spinless Fermions in the presence of a deterministic quasiperiodic potential using the Fock-space propagator. From the system-size scaling of the self-energy associated with the diagonal elements and the scaling of the off-diagonal elements of the propagator, we extract fractal characteristics and FS localization lengths, respectively, which behave similarly to that in the random system. We compute the sample-to-sample fluctuations of the typical self-energy and the off-diagonal propagator over different realizations of the potential and show that the fluctuations in the self-energy distinguish quasiperiodic and random systems, whereas the fluctuations of the off-diagonal elements cannot demarcate the two types of potential. In particular, for the random system, the sample-to-sample fluctuations of the self-energy exhibits a distinct transition or sharp crossover within the thermal phase in the form of a peak whose height increases with system size. Such a feature is completely absent in the quasiperiodic system.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"478 ","pages":"Article 170001"},"PeriodicalIF":3.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704920","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}
引用次数: 0
More on analytically approximate solution to quadratic gravity
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-03-22 DOI: 10.1016/j.aop.2025.170007
Seyed Naseh Sajadi, Supakchai Ponglertsakul
{"title":"More on analytically approximate solution to quadratic gravity","authors":"Seyed Naseh Sajadi,&nbsp;Supakchai Ponglertsakul","doi":"10.1016/j.aop.2025.170007","DOIUrl":"10.1016/j.aop.2025.170007","url":null,"abstract":"<div><div>In this work, we obtain the analytically approximation of static, spherically symmetric black hole solutions to Einstein<span><math><mo>−</mo></math></span>Weyl squared gravity by using the continued fraction expansion method. The black hole solutions are found for various relations between near horizon parameters with positive Weyl’s coupling constant <span><math><mi>α</mi></math></span>. Black hole solutions associated with different near-horizon constants are compared with the numerical ones. We obtain four branches of the black hole solutions parametrized by the integration constants and the coupling constant with positive Arnowitt–Deser–Misner (ADM) mass. A non-Schwarzschild solution appears when the integration constant reaches a certain value for arbitrary values of the coupling constant <span><math><mi>α</mi></math></span>. In addition, we study the thermodynamic and dynamical stability of the black hole solutions by considering thermodynamic quantities and the quasinormal frequencies of a test scalar field.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"477 ","pages":"Article 170007"},"PeriodicalIF":3.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705111","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}
引用次数: 0
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