Annals of Physics最新文献

{"title":"Investigating quantum criticality through charged scalar fields near the BTZ black hole horizon","authors":"Abdullah Guvendi ,&nbsp;Omar Mustafa","doi":"10.1016/j.aop.2024.169897","DOIUrl":"10.1016/j.aop.2024.169897","url":null,"abstract":"<div><div>We examine a charged scalar field with a position-dependent mass <span><math><mrow><mi>m</mi><mrow><mo>(</mo><mi>ρ</mi><mo>)</mo></mrow><mo>=</mo><msub><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>+</mo><mi>S</mi><mrow><mo>(</mo><mi>ρ</mi><mo>)</mo></mrow></mrow></math></span>, where <span><math><mrow><mi>S</mi><mrow><mo>(</mo><mi>ρ</mi><mo>)</mo></mrow></mrow></math></span> represents a Lorentz scalar potential, near a BTZ black hole in the presence of an external magnetic field. By deriving the Klein–Gordon equation for this setup, we explore two scenarios: (i) a mass-modified scalar field with <span><math><mrow><mi>m</mi><mrow><mo>(</mo><mi>ρ</mi><mo>)</mo></mrow><mo>=</mo><msub><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>−</mo><mi>a</mi><mo>/</mo><mi>ρ</mi></mrow></math></span> (an exactly solvable case), and (ii) a scenario involving both mass modification and an external magnetic field (conditionally exactly solvable). We identify quantum critical points (QCPs) associated with the coupling constant <span><math><mi>a</mi></math></span>. In the first scenario, for massless charged scalar fields, critical points occur at <span><math><mrow><mi>a</mi><mo>=</mo><mi>n</mi><mo>+</mo><mn>1</mn><mo>/</mo><mn>2</mn></mrow></math></span> for all radial quantum numbers <span><math><mrow><mi>n</mi><mo>≥</mo><mn>0</mn></mrow></math></span> and magnetic quantum numbers <span><math><mrow><mrow><mo>|</mo><mi>m</mi><mo>|</mo></mrow><mo>≥</mo><mn>0</mn></mrow></math></span>. In the second scenario, these critical points shift to <span><math><mrow><mi>a</mi><mo>=</mo><mi>n</mi><mo>+</mo><mn>3</mn><mo>/</mo><mn>2</mn></mrow></math></span> for <span><math><mrow><mi>n</mi><mo>≥</mo><mn>0</mn></mrow></math></span> and <span><math><mrow><mrow><mo>|</mo><mi>m</mi><mo>|</mo></mrow><mo>&gt;</mo><mn>0</mn></mrow></math></span>, with the case <span><math><mrow><mi>m</mi><mo>=</mo><mn>0</mn></mrow></math></span> excluded. For massive scalar fields, QCPs emerge at <span><math><mrow><mi>a</mi><mo>=</mo><mrow><mo>(</mo><mi>n</mi><mo>+</mo><mn>1</mn><mo>/</mo><mn>2</mn><mo>)</mo></mrow><mo>/</mo><mn>2</mn></mrow></math></span>, leading to non-propagating fields at zero frequency. At these QCPs, the field frequencies drop to zero, marking transitions from stable oscillatory modes to non-propagating states. Below the critical points, the system exhibits instability, characterized by negative imaginary frequencies that suggest rapid decay and high dissipation. Above the critical points, the modes stabilize and propagate, indicating a transition to a superconducting-like phase, where dissipation vanishes and stable excitations dominate.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169897"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149609","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":"Gravitational lensing and image distortion by Buchdahl inspired metric in R2 gravity","authors":"Shafia Maryam ,&nbsp;Mubasher Jamil ,&nbsp;Mustapha Azreg-Aïnou ,&nbsp;Zoe C.S. Chan","doi":"10.1016/j.aop.2024.169911","DOIUrl":"10.1016/j.aop.2024.169911","url":null,"abstract":"<div><div>We investigate gravitational lensing by <em>special</em> Buchdahl inspired metric with the Buchdahl parameter <span><math><mover><mrow><mi>k</mi></mrow><mrow><mo>̃</mo></mrow></mover></math></span>. In strong deflection limit, we derive the deflection angle analytically for the light rays that diverge as photons approach the photon sphere. These are then used in order to compute the angular image positions modeling supermassive black holes, Sgr A* and M87* as lenses. The Einstein rings for the outermost relativistic images are also depicted here alongside observational constraints on <span><math><mover><mrow><mi>k</mi></mrow><mrow><mo>̃</mo></mrow></mover></math></span> by the Einstein radius and lens mass. Constraints on <span><math><mover><mrow><mi>k</mi></mrow><mrow><mo>̃</mo></mrow></mover></math></span> are obtained modeling black holes (Sgr A* and M87*) and Canarias Einstein ring. In weak deflection limit, the analytic expression of deflection angle of the subject asymptotically flat metric in <span><math><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> gravity is determined using the Gauss Bonnet theorem. Considering M87* as a lens, weak deflection angle is used to study the image magnification and image distortion for primary and secondary images. It is shown that image distortion satisfies the hypothesis of Virbhadra. Moreover, it is seen that our general expression of deflection angle reduces, as a special case, to the deflection angle of Schwarzschild metric in both weak and strong deflection limits.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169911"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098529","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":"Yang–Mills extension of the Loop Quantum Gravity-corrected Maxwell equations","authors":"G.L.L.W. Levy,&nbsp;J.A. Helayël-Neto","doi":"10.1016/j.aop.2024.169892","DOIUrl":"10.1016/j.aop.2024.169892","url":null,"abstract":"<div><div>In this paper, we endeavor to build up a non-Abelian formulation to describe the self-interactions of massless vector bosons in the context of Loop Quantum Gravity (LQG). To accomplish this task, we start off from the modified Maxwell equations with the inclusion of LQG corrections and its corresponding local <span><math><mrow><mi>U</mi><mrow><mo>(</mo><mn>1</mn><mo>)</mo></mrow></mrow></math></span> gauge invariance. LQG effects in the electromagnetic interactions have significant importance, as they might be adopted to describe the flight time of cosmic photons coming from very high-energy explosions in the Universe, such as events of Gamma-Ray Bursts (GRBs). These photons have energy-dependent speeds, indicating that the velocity of light in the vacuum is not constant. To carry out the extension from the Abelian to the non-Abelian scenario, we shall follow the so-called Noether current procedure, which consists in recurrently introducing self-interactions into an initially free action for vector bosons by coupling the latter to the conserved currents of a global symmetry present in the action of departure. In the end of the non-Abelianization process, the initial global symmetry naturally becomes local. Once the Yang–Mills system includes LQG correction terms, it becomes possible to analyze how quantum-gravity induced contributions show up in both the electroweak and the QCD sectors of the Standard Model, providing a set-up for phenomenological investigations that may bring about new elements to discuss Physics beyond the Standard-Model.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169892"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099311","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":"Inflation in a scalar-vector gravity theory","authors":"Manuel Gonzalez-Espinoza ,&nbsp;Ramón Herrera","doi":"10.1016/j.aop.2024.169876","DOIUrl":"10.1016/j.aop.2024.169876","url":null,"abstract":"<div><div>We study the possibility that inflation is driven by a scalar field together with a vector field minimally coupled to gravity. By assuming an effective potential that incorporates both fields into the action, we explore two distinct scenarios: one where the fields interact and another where they do not. In this context, we find different analytical solutions to the background scalar-vector fields dynamics during the inflationary scenario considering the slow-roll approximation. Besides, general conditions required for these models of two fields to be realizable are determined and discussed. From the cosmological perturbations, we consider a local field rotation, and then we determine these perturbations (scalar and tensor) during inflation, and we also utilize recent cosmological observations for constraining the parameter-space in these scalar-vector inflationary models.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169876"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099316","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":"New canonical analysis for consistent extension of λR gravity","authors":"Alberto Escalante,&nbsp;P. Fernando Ocaña-García","doi":"10.1016/j.aop.2024.169916","DOIUrl":"10.1016/j.aop.2024.169916","url":null,"abstract":"<div><div>The canonical analysis of the <span><math><mrow><mi>λ</mi><mi>R</mi></mrow></math></span> model extended with the term due to Blas, Pujolas, and Sibiryakov <span><math><mrow><mo>[</mo><mi>B</mi><mi>P</mi><mi>S</mi><mo>]</mo></mrow></math></span> is performed. The analysis is developed for any value of <span><math><mi>λ</mi></math></span>, but particular attention is paid to the point <span><math><mrow><mi>λ</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>3</mn></mrow></mfrac></mrow></math></span> because of the closeness with linearized General Relativity [GR]. Then, we add the higher-order conformal term, the so-called Cotton-square term, to study the constraint structure of what constitutes an example of kinetic-conformal Horava’s gravity. At the conformal point, an extra second-class constraint appears; this does not arise at other values of <span><math><mi>λ</mi></math></span>. Then, the Dirac brackets are constructed, and we will observe that the <span><math><mrow><mi>λ</mi><mi>R</mi></mrow></math></span>-Cotton-square model shares the same number of degrees of freedom with linearized <span><math><mrow><mi>G</mi><mi>R</mi></mrow></math></span>.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169916"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098528","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}

{"title":"Quasi-local mass on rigid or round spheres in Kerr spacetime","authors":"Jacek Jezierski,&nbsp;Tomasz Smołka","doi":"10.1016/j.aop.2024.169905","DOIUrl":"10.1016/j.aop.2024.169905","url":null,"abstract":"<div><div>We introduce and analyze quasi-local mass using Hamiltonian methods. It is based on multipole decomposition for surfaces that are topological spheres. Based on the above model, tests were performed for Kerr spacetime for two arbitrary choices of surfaces: rigid spheres and round spheres. The model predicts upper and lower bounds on the total mass.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169905"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098530","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":"Aharonov–Bohm effect in an attractive inverse-square potential","authors":"J. Carvalho Veloso,&nbsp;K. Bakke","doi":"10.1016/j.aop.2024.169902","DOIUrl":"10.1016/j.aop.2024.169902","url":null,"abstract":"<div><div>We search for the Aharonov-Bohm effect for bound states when a point charge is confined to an attractive inverse-square potential. Then, we extend our discussion to the persistent currents and the revival times. In another perspective, we discuss the case in which the centrifugal term is the dominant term. In this case, we confine the point charge to two cylindrical surfaces with impenetrable potential walls and obtain the energy levels. We also discuss the Aharonov–Bohm effect for bound states and persistent currents. Finally, we calculate the revival times.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169902"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098965","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":"Different horizon cut-offs for Tsallis, Rényi and Sharma-Mittal holographic dark energies in Hořava-Lifshitz gravity","authors":"Alok Sardar ,&nbsp;Sayani Maity ,&nbsp;Ujjal Debnath ,&nbsp;Anirudh Pradhan","doi":"10.1016/j.aop.2024.169891","DOIUrl":"10.1016/j.aop.2024.169891","url":null,"abstract":"<div><div>This study evaluates the cosmic expansion history of the universe using Tsallis, Rényi and Sharma-Mittal holographic dark energy models in a non-flat universe. The modified field equations for logarithmic and power law entropy corrected models have been investigated in Hořava-Lifshitz gravity. We suppose the universe is filled with dark energy and interacting cold dark matter. Considering the Hubble horizon and Granda-Oliveros (GO) as infrared cut-offs, we analyze the cosmological implication of the equation of state parameter, squared sound speed, and <span><math><mrow><msub><mrow><mi>ω</mi></mrow><mrow><mi>d</mi></mrow></msub><mtext>–</mtext><msubsup><mrow><mi>ω</mi></mrow><mrow><mi>d</mi></mrow><mrow><mo>′</mo></mrow></msubsup></mrow></math></span> phase plane graphically during the cosmic evolution. By the equation of state parameters, we see how the universe evolved at different stages in the models we consider. We obtain the thawing or freezing regions by analyzing the phase plane <span><math><mrow><msub><mrow><mi>ω</mi></mrow><mrow><mi>d</mi></mrow></msub><mtext>–</mtext><msubsup><mrow><mi>ω</mi></mrow><mrow><mi>d</mi></mrow><mrow><mo>′</mo></mrow></msubsup></mrow></math></span>. We also demonstrate the classically stable or unstable behavior of the considered models by studying the squared sound speed parameter.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169891"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099315","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":"Mass oscillations in superconducting junctions for gravitational wave emission and detection","authors":"Victor Atanasov ,&nbsp;Avadh Saxena","doi":"10.1016/j.aop.2024.169885","DOIUrl":"10.1016/j.aop.2024.169885","url":null,"abstract":"<div><div>We revisit the nonlinear superconducting junction dynamics in order to provide evidence that the time-dependent current density in the junction is related to an oscillating charge and mass density in addition to a variable velocity. As a result, the superconducting tunnel junction emerges as a solid state device capable of producing rapid charge and mass oscillations inaccessible in classical contexts. Rapidity is required for gravitational wave emission when small masses are involved in the emission process. We provide designs for an emitting and a detecting device based on generating and capturing mass oscillations with a non-zero quadrupole moment component. Finally, we suggest that the smallness of the Einstein gravitational coupling constant can be fully compensated by the largeness of the quantum mechanical term <span><math><mrow><msup><mrow><mi>e</mi></mrow><mrow><mn>4</mn></mrow></msup><msup><mrow><mo>ħ</mo></mrow><mrow><mo>−</mo><mn>6</mn></mrow></msup></mrow></math></span> manifested in the suggested set ups.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169885"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099317","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":"Modeling of Hybrid Baryonic-Quark Matter in f(R) Gravity with scalar potential","authors":"Adnan Malik ,&nbsp;Mariyah Aslam ,&nbsp;Shahid Chaudhary ,&nbsp;Ayesha Almas ,&nbsp;Ghazala Kausar","doi":"10.1016/j.aop.2024.169896","DOIUrl":"10.1016/j.aop.2024.169896","url":null,"abstract":"<div><div>This paper investigates the characteristics of static, anisotropic self-gravitating structures composed of baryonic matter coupled with the strange quark matter in the background of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>ϕ</mi><mo>,</mo><mi>X</mi><mo>)</mo></mrow></mrow></math></span> gravity. To describe the relationship between pressure and matter density for the quark matter configuration, we employ the MIT bag model. In our analysis, we articulated the system of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>ϕ</mi><mo>,</mo><mi>X</mi><mo>)</mo></mrow></mrow></math></span> field equations by incorporating the MIT bag model alongside a linear equation of state in a specific gravitational model. The Tolman–Kuchowicz metric potentials are used to model these fluids, and the constants are calculated by applying junction conditions, with the Schwarzschild geometry serving as the exterior solution. We thoroughly examined the physical validity of the derived solution by investigating the metric functions, matter components, energy conditions, hydrostatic equilibrium, and stability criteria. For the comprehensive graphical analysis, we fixed numerical values, including the bag constant and other parameters for nine compact star candidates. Consequently, our proposed model meets all important stability criteria and physical conditions, providing the solid basis for exploring the characteristics of hybrid stars.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169896"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149607","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}