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Elementary atoms in spaces of constant curvature by the Nikiforov–Uvarov method 用Nikiforov-Uvarov方法研究常曲率空间中的基本原子
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-05-08 DOI: 10.1016/j.aop.2025.170066
Abdaljalel E. Alizzi , Alina E. Sagaydak , Zurab K. Silagadze
{"title":"Elementary atoms in spaces of constant curvature by the Nikiforov–Uvarov method","authors":"Abdaljalel E. Alizzi ,&nbsp;Alina E. Sagaydak ,&nbsp;Zurab K. Silagadze","doi":"10.1016/j.aop.2025.170066","DOIUrl":"10.1016/j.aop.2025.170066","url":null,"abstract":"<div><div>The Nikiforov–Uvarov method is a simple, yet elegant and powerful method for solving second-order differential equations of generalized hypergeometric type. In the past, it has been used to solve many problems in quantum mechanics and elsewhere. We apply this method to the classical problem of hydrogen-like atoms in spaces of constant curvature. Both the spectra of these atoms and their wave functions, including normalization, are easily obtained.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170066"},"PeriodicalIF":3.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937638","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
Chronology Protection Conjecture in the Kerr–Newman black hole spacetime Kerr-Newman黑洞时空中的时序保护猜想
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-05-06 DOI: 10.1016/j.aop.2025.170051
David Senjaya
{"title":"Chronology Protection Conjecture in the Kerr–Newman black hole spacetime","authors":"David Senjaya","doi":"10.1016/j.aop.2025.170051","DOIUrl":"10.1016/j.aop.2025.170051","url":null,"abstract":"<div><div>In this work, we investigate the dynamics of relativistic quantum scalar fields inside the inner horizon of the 3+1 dimensional subextremal Kerr–Newman black hole, where closed timelike curves (CTCs) exist. We start by constructing the governing Klein–Gordon equation in the black hole background and present the derivation to obtain analytical exact solutions in detail. Thanks to the recent developments of the Heun-family special functions, we can express the exact Klein–Gordon’s radial solutions in terms of the Confluent Heun functions. The scalar fields’ relativistic energy quantization is then obtained from the Confluent Heun function’s polynomial condition. The complex eigenenergies with positive real part, in the region inside the inner horizon of the charged rotating black hole, are found to have a positive imaginary part, describing states that grow in time. It turns out that the revealed phenomena of instabilities follow Hawking’s prediction, known as the Chronology Protection Conjecture (CPC), i.e., fields of particles entering the aforementioned region will experience blue-shifting. In this work, it is for the first time that an exact investigation is carried out to examine Hawking’s Chronology Protection Conjecture (CPC) by investigating the exact eigensolutions of the Klein–Gordon equation in the region inside the inner horizon of a subextremal Kerr–Newman black hole.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170051"},"PeriodicalIF":3.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937636","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
Transmission through rectangular potentials in semimetals featuring quadratic dispersion 具有二次色散的半金属中通过矩形电位的传输
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-05-05 DOI: 10.1016/j.aop.2025.170053
Ipsita Mandal
{"title":"Transmission through rectangular potentials in semimetals featuring quadratic dispersion","authors":"Ipsita Mandal","doi":"10.1016/j.aop.2025.170053","DOIUrl":"10.1016/j.aop.2025.170053","url":null,"abstract":"<div><div>We revisit the problem of transmission of quasiparticles through a rectangular potential barrier, for semimetals featuring quadratic-in-momentum band-crossings at a nodal point. Although this was considered in Mandal (2020), the solutions corresponding to evanescent waves were missed, leading to a partial fulfilment of the boundary conditions required to determine the piecewise-continuous wavefunctions. In this paper, our aim is to correct those shortcomings, recompute the transmission coefficients, and show the resulting behaviour of the conductivity and the Fano factors for some representative parameter values.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170053"},"PeriodicalIF":3.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942693","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
Dynamic Moiré-like pattern in non-Hermitian Wannier–Stark ladder system 非厄米wanner - stark梯系的动态moir<s:1>样图案
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-05-04 DOI: 10.1016/j.aop.2025.170049
H.P. Zhang, Z. Song
{"title":"Dynamic Moiré-like pattern in non-Hermitian Wannier–Stark ladder system","authors":"H.P. Zhang,&nbsp;Z. Song","doi":"10.1016/j.aop.2025.170049","DOIUrl":"10.1016/j.aop.2025.170049","url":null,"abstract":"<div><div>We study the dynamical behavior of the non-Hermitian Wannier–Stark ladder system, which is a non-Hermitian Su–Schrieffer–Heeger chain with a position-dependent real potential. In the presence of a linear external field, we employ the non-Hermitian Floquet method and find that the energy levels are sensitive to the field. The system exhibits two distinct dynamic behaviors separated by an exceptional point: one in the <span><math><mi>PT</mi></math></span> symmetrical region associated with two real Wannier–Stark ladders, and another in the <span><math><mi>PT</mi></math></span> symmetry-breaking region associated with complex conjugate ladders. As the boundary between the two regions, two ladders coalesce into a single ladder. In the case of a non-linear field, these two distinct regions appear alternately along the chain, exhibiting dynamic Moiré-like patterns.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170049"},"PeriodicalIF":3.0,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905988","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
Investigation of the spin dynamics of quantum spin dimers with Dzyaloshinsky–Moriya interaction Dzyaloshinsky-Moriya相互作用下量子自旋二聚体的自旋动力学研究
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-30 DOI: 10.1016/j.aop.2025.170031
R. Wieser , R. Sánchez Galán
{"title":"Investigation of the spin dynamics of quantum spin dimers with Dzyaloshinsky–Moriya interaction","authors":"R. Wieser ,&nbsp;R. Sánchez Galán","doi":"10.1016/j.aop.2025.170031","DOIUrl":"10.1016/j.aop.2025.170031","url":null,"abstract":"<div><div>We investigate the ground state configuration and spin dynamics of a quantum spin spiral dimer when a magnetic field is applied to one of its constituent spins. By adiabatic changing the magnetic field, it is possible to change the non-magnetic ground state to a classical spiral state, which oscillates periodically to its inverted classical spiral state configuration. This oscillation can be halted at any time, leading to the possibility of manipulating the quantum state and the magnetic configuration of the spin dimer. Notably, this idea is not limited to spin dimers and can also be extended to quantum spin chains with an even number of spins.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170031"},"PeriodicalIF":3.0,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899190","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
Quantum annealing with chaotic driver Hamiltonians 混沌驱动哈密顿量的量子退火
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-29 DOI: 10.1016/j.aop.2025.170042
Henning Schlömer , Subir Sachdev
{"title":"Quantum annealing with chaotic driver Hamiltonians","authors":"Henning Schlömer ,&nbsp;Subir Sachdev","doi":"10.1016/j.aop.2025.170042","DOIUrl":"10.1016/j.aop.2025.170042","url":null,"abstract":"<div><div>Quantum annealing is a computational approach designed to leverage quantum fluctuations for solving large-scale classical optimization problems. Although incorporating standard transverse field (TF) terms in the annealing process can help navigate sharp minima, the potential for achieving a scalable quantum advantage for general optimization problems remains uncertain. Here, we examine the effectiveness of including chaotic quantum driver Hamiltonians in the annealing dynamics. Specifically, we investigate driver Hamiltonians based on a bosonic spin version of the Sachdev-Ye-Kitaev (SYK) model, which features a high degree of non-locality and non-commutativity. Focusing on MaxCut instances on regular graphs, we find that a considerable proportion of SYK model instances demonstrate significant speedups, especially for challenging graph configurations. Additionally, our analysis of time-to-solution scalings for the low autocorrelation binary sequence (LABS) problem suggests that SYK-type fluctuations can outperform traditional transverse field annealing schedules in large-scale optimization tasks.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170042"},"PeriodicalIF":3.0,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899191","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
Perturbations and quasinormal modes of the Dirac field in Effective Quantum Gravity 有效量子引力中狄拉克场的微扰和拟正态模
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-29 DOI: 10.1016/j.aop.2025.170046
Zainab Malik
{"title":"Perturbations and quasinormal modes of the Dirac field in Effective Quantum Gravity","authors":"Zainab Malik","doi":"10.1016/j.aop.2025.170046","DOIUrl":"10.1016/j.aop.2025.170046","url":null,"abstract":"<div><div>Recently, two models of quantum-corrected Schwarzschild-like black holes were developed within Effective Quantum Gravity, and the spectra of bosonic perturbations have been analyzed in several recent studies. In this work, we investigate the quasinormal modes of a massless Dirac field perturbations around these black holes. By employing the higher-order WKB method and time-domain integration, we achieved consistency between the two approaches within their common range of validity. This concordance enables us to distinguish the two quantum-corrected black hole models from each other and from their Schwarzschild limit through their quasinormal spectra. In addition, we find approximate analytic expressions for quasinormal modes and grey-body factors in the form of expansion beyond the eikonal limit.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170046"},"PeriodicalIF":3.0,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905989","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
Multi-time version of the Landau–Peierls formulation of quantum electrodynamics 量子电动力学Landau-Peierls公式的多时间版本
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-29 DOI: 10.1016/j.aop.2025.170043
Matthias Lienert, Roderich Tumulka
{"title":"Multi-time version of the Landau–Peierls formulation of quantum electrodynamics","authors":"Matthias Lienert,&nbsp;Roderich Tumulka","doi":"10.1016/j.aop.2025.170043","DOIUrl":"10.1016/j.aop.2025.170043","url":null,"abstract":"<div><div>Landau and Peierls wrote down the Hamiltonian of a simplified version of quantum electrodynamics in the particle-position representation. We present a multi-time version of their Schrödinger equation, which bears several advantages over their original equation: the time evolution equations are simpler and more natural; they are more transparent with respect to choice of gauge; and, perhaps most importantly, they are manifestly Lorentz covariant. We discuss properties of the multi-time equations. Along the way, we also discuss the Lorentz covariant 3d Dirac delta distribution for spacelike surfaces and the inner product of photon wave functions on spacelike surfaces in an arbitrary gauge.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170043"},"PeriodicalIF":3.0,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942691","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
Analytical solution to the Lippmann–Schwinger equation in the spherical space 球面空间Lippmann-Schwinger方程的解析解
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-27 DOI: 10.1016/j.aop.2025.170048
Anderson L. de Jesus, Rafael M. Fortiny, Alexandre G.M. Schmidt
{"title":"Analytical solution to the Lippmann–Schwinger equation in the spherical space","authors":"Anderson L. de Jesus,&nbsp;Rafael M. Fortiny,&nbsp;Alexandre G.M. Schmidt","doi":"10.1016/j.aop.2025.170048","DOIUrl":"10.1016/j.aop.2025.170048","url":null,"abstract":"<div><div>The purpose of this work is to obtain an analytical solution to the Lippmann–Schwinger equation for a scalar particle, bounded in a two-dimensional space with constant positive curvature, called the spherical space. Making use of the thin-layer quantization method, we present the free particle wave function solving the Schrödinger equation on the spherical space using the Laplace–Beltrami operator. We use the Green’s function on the spherical space as the kernel in the Lippmann–Schwinger equation and solve it exactly for the boundary-wall potential, modeled as Dirac delta distributions, considering single, double and finding the generalized result for multiple consecutive barriers. The probability densities are presented graphically.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170048"},"PeriodicalIF":3.0,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895232","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
Rational extension of anisotropic harmonic oscillator potentials in higher dimensions 高维各向异性谐振子势的有理推广
IF 3 3区 物理与天体物理
Annals of Physics Pub Date : 2025-04-26 DOI: 10.1016/j.aop.2025.170045
Rajesh Kumar , Rajesh Kumar Yadav , Avinash Khare
{"title":"Rational extension of anisotropic harmonic oscillator potentials in higher dimensions","authors":"Rajesh Kumar ,&nbsp;Rajesh Kumar Yadav ,&nbsp;Avinash Khare","doi":"10.1016/j.aop.2025.170045","DOIUrl":"10.1016/j.aop.2025.170045","url":null,"abstract":"<div><div>This paper presents the first-order supersymmetric rational extension of the quantum anisotropic harmonic oscillator (QAHO) in multiple dimensions, including full-line, half-line, and their combinations. The exact solutions are in terms of the exceptional orthogonal polynomials. The rationally extended potentials are isospectral to the conventional QAHOs.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"479 ","pages":"Article 170045"},"PeriodicalIF":3.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882505","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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