International Journal of Theoretical Physics最新文献_第4页

The Influence of Global Monopole Space-time on Bound States, Scattering States and Thermodynamic Functions with Manning-Rosen Potential

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-03-04 DOI: 10.1007/s10773-025-05930-w

H. I. Alrebdi, A. N. Ikot, U. S. Okorie, R. Horchani, G. J. Rampho

{"title":"The Influence of Global Monopole Space-time on Bound States, Scattering States and Thermodynamic Functions with Manning-Rosen Potential","authors":"H. I. Alrebdi, A. N. Ikot, U. S. Okorie, R. Horchani, G. J. Rampho","doi":"10.1007/s10773-025-05930-w","DOIUrl":"10.1007/s10773-025-05930-w","url":null,"abstract":"<div><p>In this study, the analytical eigensolutions of the radial Schrödinger equation with a point-like global monopole under the combined Manning-Rosen potential and screened Coulomb self-interaction potential has been investigated. The Greene-Aldrich approximation was used to overcome the centrifugal barrier which allows for the derivation of the energy and wave function in closed form. The solution of the energy and wave function were applied to investigate the scattering phase shift and thermodynamics function variations with topological defect parameter, quantum numbers and temperature, respectively. The results reveal that the energy eigenvalues and wave function amplitudes are influenced by the quantum numbers and the topological defect parameters. The shift in energy eigenvalues observed are caused by the particle collisions that exist in the system. The scattering phase shifts were found to be sensitive to the rotational quantum numbers and topological defect values. The thermodynamic plots exhibit high dependency on the temperature and topological defect parameters considered. Specific observation is the Schottky anomaly which exists uniquely for the topological defect values at low temperatures. Our results agree with occurrences in physical phenomenon, as recorded in literatures.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-025-05930-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Dynamics of Solitons, Lie Symmetry, Bifurcation, and Stability Analysis in the Time-regularized Long-wave Equation

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-03-03 DOI: 10.1007/s10773-025-05935-5

Dean Chou, Salah Mahmood Boulaaras, Muhammad Abbas, Ifrah Iqbal, Hamood Ur Rehman

{"title":"Dynamics of Solitons, Lie Symmetry, Bifurcation, and Stability Analysis in the Time-regularized Long-wave Equation","authors":"Dean Chou, Salah Mahmood Boulaaras, Muhammad Abbas, Ifrah Iqbal, Hamood Ur Rehman","doi":"10.1007/s10773-025-05935-5","DOIUrl":"10.1007/s10773-025-05935-5","url":null,"abstract":"<div><p>The time-regularized long-wave equation is pivotal in understanding diverse wave dynamics, such as shallow water waves, pressure waves in liquids and gas bubbles, ion-acoustic waves in plasma, and nonlinear transverse waves in magnetohydrodynamics. The analysis is initiated by deriving the infinitesimal generators of the Lie group symmetries, followed by constructing a commutator table and adjoint table to study the algebraic structure of the equation’s symmetries. Using this symmetries, the time-regularized long-wave equation is systematically reduced and solved for invariant solutions associated with each symmetry. These solutions give insight into the inherent properties of the system and wave behavior. The extended hyperbolic function method is employed to derive exact solutions to the simplified versions of the time-regularized long-wave equation. This method enhances the solution process by generating soliton solutions including dark, singular, bright and periodic-singular solutions. To illustrate their behavior of obtained solutions, graphical representations are given by using different values of parameters. A comprehensive bifurcation analysis is also conducted to explore the qualitative changes in the dynamics of system, while the Hamiltonian structure of the equation is constructed to investigate its conservation properties. The study also investigates the phase portraits of the system to offer a visual interpretation of the solution trajectories in phase space. Finally, the modulation instability of the time-regularized long-wave equation through linear stability analysis is analyzed to provide a clearer understanding of the conditions that lead to the onset of instability in wave propagation.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The Dirac Oscillator in the Context of Jaynes-Cummings and Anti-Jaynes-Cummings Models for Vortex Analysis in (2+1)-Dimensional Space-time 杰恩斯-康明斯和反杰恩斯-康明斯模型背景下的（2+1）维时空涡旋分析中的狄拉克振荡器

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-03-03 DOI: 10.1007/s10773-025-05936-4

M. García, Jaime Manuel Cabrera, R. Falconi

{"title":"The Dirac Oscillator in the Context of Jaynes-Cummings and Anti-Jaynes-Cummings Models for Vortex Analysis in (2+1)-Dimensional Space-time","authors":"M. García, Jaime Manuel Cabrera, R. Falconi","doi":"10.1007/s10773-025-05936-4","DOIUrl":"10.1007/s10773-025-05936-4","url":null,"abstract":"<div><p>This study investigates the two-dimensional Dirac oscillator in (2+1)-dimensional spacetime under the influence of a perpendicular magnetic field, focusing on specific transitions in the magnetic quantum numbers m<span>(varvec{>0})</span> and m<span>(varvec{<0})</span>. These transitions are characterized by the exchange of chiral creation and annihilation operators, which define two distinct directions associated with the magnetic field, termed right and left operators. We explore the behavior of spin-polarized electron vortices through these operators, applying the Jaynes-Cummings (JC) and Anti-Jaynes-Cummings (AJC) models to analyze quantum transitions. Utilizing the rotating wave approximation, we perform rotational coupling transformations <span>(varvec{T_{pm }})</span> and counter-rotating transformations <span>(varvec{L_{pm }})</span>, leading to the derivation of the transformed Hamiltonians <span>(varvec{H_{DOAJC}^{L_{pm }}})</span> and <span>(varvec{H_{DOJC}^{T_{pm }}})</span>. These results provide a deeper understanding of the dynamics and coupling mechanisms in the Dirac oscillator influenced by a magnetic field.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Nonclassicality and Sub-Planck Structures of Photon Subtracted Compass States

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-03-01 DOI: 10.1007/s10773-025-05938-2

Amit Das, Sobhan Sounda

引用次数: 0

Black Hole Optics and Greybody Factors in the Presence of Generalized Chaplygin-Jacobi Dark Fluid

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-02-28 DOI: 10.1007/s10773-025-05926-6

Shahid Chaudhary, Muhammad Danish Sultan, Adnan Malik, Yousef Mohammad Alanazi, Abdulrahman Bin Jumah, Asifa Ashraf

{"title":"Black Hole Optics and Greybody Factors in the Presence of Generalized Chaplygin-Jacobi Dark Fluid","authors":"Shahid Chaudhary, Muhammad Danish Sultan, Adnan Malik, Yousef Mohammad Alanazi, Abdulrahman Bin Jumah, Asifa Ashraf","doi":"10.1007/s10773-025-05926-6","DOIUrl":"10.1007/s10773-025-05926-6","url":null,"abstract":"<div><p>We investigate black hole solution within the framework of a generalized Chaplygin-Jacobi dark fluid background, focusing on perturbations and the greybody factor in this intriguing model. This model holds significance due to its characterization by two critical parameters <span>(alpha )</span> and <span>(beta )</span> which signify the deviation from the Schwarzschild black hole and the degree of anisotropy in the dark fluid respectively. We study the time evolution of the black hole by focusing on these key parameters, demonstrating that they significantly influence the damping and oscillation frequencies. Additionally, we evaluate the greybody factor bounds for the black hole under consideration. The key parameters <span>(alpha )</span> and <span>(beta )</span> significantly affect the bounds of the greybody factors, indicating that lower-frequency radiation can escape the black hole, while higher-frequency radiation is more effectively trapped. This highlights the substantial influence of <span>(alpha )</span> and <span>(beta )</span> on the characteristics of the black hole. Thus, we investigate the influence of these parameters on the optical properties of the black hole. By considering both static and infalling accretion models, we explore the impacts of <span>(alpha )</span> and <span>(beta )</span> on the black hole’s shadows and photon rings.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Exploring the Gross-Pitaevskii Model in Bose-Einstein Condensates and Communication Systems: Features of Solitary Waves and Dynamical Analysis

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-02-28 DOI: 10.1007/s10773-025-05937-3

Muhammad Ajmal, Jan Muhammad, Usman Younas, Ejaz Hussian, Mohammed El- Meligy, Mohamed Sharaf

{"title":"Exploring the Gross-Pitaevskii Model in Bose-Einstein Condensates and Communication Systems: Features of Solitary Waves and Dynamical Analysis","authors":"Muhammad Ajmal, Jan Muhammad, Usman Younas, Ejaz Hussian, Mohammed El- Meligy, Mohamed Sharaf","doi":"10.1007/s10773-025-05937-3","DOIUrl":"10.1007/s10773-025-05937-3","url":null,"abstract":"<div><p>The Gross-Pitaevskii Equation (GPE), which belongs to the class of nonlinear Schrödinger equations is recognized for its applications in diverse fields such as Bose-Einstein Condensates and optical fiber. In this study, the dynamic behaviors of various wave solutions to the M-fractional nonlinear Gross-Pitaevskii equation are examined. Intriguing insights into the mechanisms regulating the intricate wave patterns of the model are offered through this investigation. To secure the solutions, including complex, bright, dark, combined, and singular soliton solutions, the Kumar-Malik method, the modified generalized exponential rational function method, and the generalized multivariate exponential rational integral function method are substantially applied. The fractional parametric effects on solitary waves are observed graphically. Moreover, the Galilean transformation is adopted, and bifurcation, sensitivity, chaotic behavior, 2D and 3D phase portraits, Poincaré maps, time series analysis, and sensitivity to multistability under different conditions are explored.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

On Sectorial Photon Theories Reconstructing Einstein’s Early Fusion Picture for Light

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-02-25 DOI: 10.1007/s10773-025-05928-4

Alfred Rieckers

{"title":"On Sectorial Photon Theories Reconstructing Einstein’s Early Fusion Picture for Light","authors":"Alfred Rieckers","doi":"10.1007/s10773-025-05928-4","DOIUrl":"10.1007/s10773-025-05928-4","url":null,"abstract":"<div><p>This is the second part of a pair of companion papers devoted to an analysis of Einstein’s fusion picture for light. While in the foregoing paper “An Actual Discusion of Einstein’s Early Fusion Picture for Photons and Classical Maxwell Fields” (referred to as Rieckers 2025) our conclusions ended with the historical <i>ab initio</i> motivation and mathematical elaboration of a multi-photon theory in Fock space, we now start from the non–separable C*-Weyl algebra gained by abstracting the Fock–represented Weyl algebra. To the rich state space of this antiliminary observable algebra we apply notions of a convex state space approach to identify sub–theories that cover classical field states (including the vacuum with classical zero–field), that are possibly decorated by photonic quantum noise. The main emphasis is laid on direct integrals over irreducible, disjoint representations of the C*-Weyl algebra, decomposing the effective photon theory into sectors. Certain limits of smeared central field operators suggest a mathematical realization of Einstein’s early photon notion consisting of an energy point surrounded by a local force field (respective wave function). Macroscopic classical Maxwell fields are gained by superposing the expectation values of products of those composite photon operators. The ontological status of the explicated photon notion is discussed. Connections to Einstein’s historic photon theory, summarized in Rieckers (2025), as well as to quantum optical applications are hinted at throughout the paper.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-025-05928-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

An Actual Discussion of Einstein’s Early Fusion Picture for Photons and Classical Maxwell Fields

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-02-25 DOI: 10.1007/s10773-025-05927-5

Alfred Rieckers

{"title":"An Actual Discussion of Einstein’s Early Fusion Picture for Photons and Classical Maxwell Fields","authors":"Alfred Rieckers","doi":"10.1007/s10773-025-05927-5","DOIUrl":"10.1007/s10773-025-05927-5","url":null,"abstract":"<div><p>This is the first part of a pair of companion papers devoted to an analysis of Einstein’s fusion picture for light-quanta (subsequently also referred to as “photons”) with classical electromagnetic fields that he formulated in 1909 via a purely verbal description. There, the overlap of many of the hypothetical local force fields, surrounding the photonic energy points, should produce the well–known classical Maxwell fields. We claim that, alone from such a logical connection, that apparently did not receive sufficient attention in the literature, one may draw essential conclusions on the photon states. In the present paper, we give a historical overview of Einstein’s photon conceptions until 1927. We extract hints from his formulations, that lead from his local force fields to Schrödinger wave functions, which reproduce the conserved integrals for energy, momentum, and angular momentum of Maxwell theory in form of Hilbert space expectations. Also a preliminary multi–photon theory, including Glauber states, is shown to be motivated by Einstein’s composite photons with possibly (incoherently!) overlapping force fields. In the resulting Fock space theory, gained by symmetrizing the many–photon states the goal of a fusion theory is, however, not realizable. In the subsequent companion paper “On sectorial photon theories reconstructing Einstein’s early fusion picture for light” (referred to as Rieckers 2025) our conclusions are extended to photon states that surpass Fock space theory by describing actual infinitely many photons. These are shown to cover also classical light states in terms of collective structures. Appealing to the more recent mathematical tools of convex state space approach and algebraic quantum field theory, we suggest there mathematical realizations of Einstein’s fusion program.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-025-05927-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

The Inflationary Quartic Hilltop Model in a Modified Gravity and Its Comparison with the Observations

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-02-21 DOI: 10.1007/s10773-025-05922-w

Feyzollah Younesizadeh, Davoud Kamani

引用次数: 0

Tight upper bound of genuine four party Svetlichny type nonlocality

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-02-20 DOI: 10.1007/s10773-025-05925-7

Sk Sahadat Hossain, Biswajit Paul, Indrani Chattopadhyay, Debasis Sarkar

引用次数: 0