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A Relativistic Position–Dependent Mass System of Bosonic Field in Cosmic String Space–Time Background 宇宙弦时空背景下玻色子场的相对论位置依赖质量系统
IF 1.8 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-06-11 DOI: 10.1007/s00601-025-01997-7
Abbad Moussa, Houcine Aounallah, Sebastián Valladares, Clara Rojas
{"title":"A Relativistic Position–Dependent Mass System of Bosonic Field in Cosmic String Space–Time Background","authors":"Abbad Moussa,&nbsp;Houcine Aounallah,&nbsp;Sebastián Valladares,&nbsp;Clara Rojas","doi":"10.1007/s00601-025-01997-7","DOIUrl":"10.1007/s00601-025-01997-7","url":null,"abstract":"<div><p>In this work, we investigate the relativistic quantum motion of spin–zero scalar bosons via the Duffin–Kemmer–Petiau (DKP) equation with a position–dependent mass (PDM) system in the background of the topological defect space–time produced by a cosmic string. We determine the radial wave equation and obtain the exact analytical solutions of the wave equation for the linear and Cornell–type potential through the Bi–Confluent Heun differential equation. In fact, we have obtained the ground state energy for both potentials.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164292","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
Three-Dimensional Integral Faddeev Equations without a Certain Symmetry 无一定对称性的三维积分Faddeev方程
IF 1.8 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-06-04 DOI: 10.1007/s00601-025-01991-z
Egorov Mikhail
{"title":"Three-Dimensional Integral Faddeev Equations without a Certain Symmetry","authors":"Egorov Mikhail","doi":"10.1007/s00601-025-01991-z","DOIUrl":"10.1007/s00601-025-01991-z","url":null,"abstract":"<div><p>A method for the direct integration of the three-dimensional Faddeev equations with respect to the breakup T-matrix in momentum space for three-body systems with differing masses is presented. The Faddeev equations are explicitly formulated without imposing symmetry or antisymmetry requirements on the two-body t-matrices, thus accounting for mass differences between the three interacting particles. An algorithm for the algebraic determination of non-relativistic wave functions for three-body systems with arbitrary masses is given. Furthermore, it is directly demonstrated how the domain of logarithmic singularities in the integral kernels of the Faddeev equations is significantly altered by varying the masses of the interacting particles. The developed method for traversing logarithmic singularities is tested using the example of calculating the total cross sections for elastic neutron-deuteron scattering and breakup reaction.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161633","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
Ab initio no-core shell-model study of (^{20-23})Na isotopes 从头算无核壳模型研究(^{20-23}) Na同位素
IF 1.8 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-06-02 DOI: 10.1007/s00601-025-01995-9
Chandan Sarma, Praveen C. Srivastava
{"title":"Ab initio no-core shell-model study of (^{20-23})Na isotopes","authors":"Chandan Sarma,&nbsp;Praveen C. Srivastava","doi":"10.1007/s00601-025-01995-9","DOIUrl":"10.1007/s00601-025-01995-9","url":null,"abstract":"<div><p>We have done a systematic no-core shell-model study of <span>(^{20-23})</span>Na isotopes. The low-energy spectra of these sodium isotopes consisting of natural and un-natural parity states were reported, considering three realistic interactions: inside nonlocal outside Yukawa (INOY), charge-dependent Bonn 2000 (CDB2K), and the chiral next-to-next-to-next-to-leading order (N<span>(^3)</span>LO). We also present the mirror energy differences in the low-energy spectra of <span>(|T_z|)</span> = 1/2 mirror pair (<span>(^{21})</span>Na - <span>(^{21})</span>Ne). Apart from the energy spectra, we have also reported the electromagnetic transition strengths and moments. Finally, considering all three realistic interactions, we report the point-proton radii and neutron skin thicknesses.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161295","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
Selected Spectroscopic Characteristics of Lithium Atom Confined in Endofullerene with Noncentral Interaction within Quantum Plasma 量子等离子体中非中心相互作用约束在内富勒烯中的锂原子的选择光谱特性
IF 1.7 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-05-19 DOI: 10.1007/s00601-025-01993-x
Gamze Ordu, Mustafa Kemal Bahar
{"title":"Selected Spectroscopic Characteristics of Lithium Atom Confined in Endofullerene with Noncentral Interaction within Quantum Plasma","authors":"Gamze Ordu,&nbsp;Mustafa Kemal Bahar","doi":"10.1007/s00601-025-01993-x","DOIUrl":"10.1007/s00601-025-01993-x","url":null,"abstract":"<div><p>In this work, the behavior of a lithium (Li) atom within a noncentral interacting endohedral fullerene under spherical confinement and in a quantum plasma environment is investigated. The relevant Schrödinger wave equation is solved using a hybrid approach that combines the tridiagonal matrix method and the asymptotic iteration method. Through this solution, the system’s energy levels, probability densities, dipole polarizabilities, and oscillator strengths are calculated. The changes in plasma density, plasma shielding effect, and endofullerene parameters significantly influence the dynamics of these fundamental properties. Specifically, the analysis of oscillator strengths reveals the strength of electromagnetic interactions during transitions within the system and details how these transitions are affected by plasma, endofullerene confinement, spherical confinement, and angular interactions. Changes in dipole polarizability illustrate how the atom evolves under the influence of these external factors, while differences in oscillator strengths play a critical role in understanding the efficiency of electronic transitions and the system’s interaction with electromagnetic waves. This work contributes to a better understanding of endohedral molecular systems in quantum plasma environments and provides a valuable foundation for modeling the properties of such systems. Moreover, as it serves as an important reference for broader investigations into the dynamics of noncentral endohedral fullerene and quantum plasma interactions at the atomic and molecular levels, it sheds light on future experimental and theoretical studies.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00601-025-01993-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090942","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
On the SUSY Structure of Spherically Symmetric Pauli Hamiltonians 球对称泡利哈密顿量的SUSY结构
IF 1.7 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-05-18 DOI: 10.1007/s00601-025-01994-w
Georg Junker
{"title":"On the SUSY Structure of Spherically Symmetric Pauli Hamiltonians","authors":"Georg Junker","doi":"10.1007/s00601-025-01994-w","DOIUrl":"10.1007/s00601-025-01994-w","url":null,"abstract":"<div><p>It is shown that the quantum Hamiltonian characterising a non-relativistic electron under the influence of an external spherical symmetric electromagnetic potential exhibits a supersymmetric structure. Both cases, spherical symmetric scalar potentials and spherical symmetric vector potentials are discussed in detail. The current approach, which includes the spin-<span>(frac{1}{2})</span> degree of freedom, provides new insights to known models like the radial harmonic oscillator and the Coulomb problem. We also find a few new exactly solvable models, one of them exhibiting a new mixed type of shape invariance containing translation and scaling of potential parameters. The fundamental role as Witten parity played by the spin-orbit operator is high-lighted.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00601-025-01994-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073816","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
Contributions of ({varvec{psi }}_{textbf{2}})(3823) and (varvec{psi })(4040) Charmonium in (varvec{B}^{mathbf{+}}varvec{rightarrow } varvec{J}/varvec{psi eta K}^{mathbf{+}}) Decay ({varvec{psi }}_{textbf{2}})（3823）和(varvec{psi }) (4040) Charmonium在(varvec{B}^{mathbf{+}}varvec{rightarrow } varvec{J}/varvec{psi eta K}^{mathbf{+}})衰变中的贡献
IF 1.7 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-05-18 DOI: 10.1007/s00601-025-01992-y
Elnaz Amirkhanlou, Behnam Mohammadi
{"title":"Contributions of ({varvec{psi }}_{textbf{2}})(3823) and (varvec{psi })(4040) Charmonium in (varvec{B}^{mathbf{+}}varvec{rightarrow } varvec{J}/varvec{psi eta K}^{mathbf{+}}) Decay","authors":"Elnaz Amirkhanlou,&nbsp;Behnam Mohammadi","doi":"10.1007/s00601-025-01992-y","DOIUrl":"10.1007/s00601-025-01992-y","url":null,"abstract":"<div><p>A recent study from the LHCb detector analyzed the <span>(J/psi eta )</span> mass spectrum from <span>(B^+rightarrow J/psi eta K^+)</span> decays, reporting the branching fraction ratios as <span>(F_{X}equiv frac{mathcal {B}r(B^+rightarrow psi ' K^+)times mathcal {B}r(psi 'rightarrow J/psi eta )}{mathcal {B}r(B^+rightarrow psi (2S) K^+)times mathcal {B}r(psi (2S)rightarrow J/psi eta )})</span> for <span>(psi '=psi _2(3823),psi (4040))</span>, which are <span>((5.95^{+3.38}_{-2.55})times 10^{-2})</span> and <span>((40.60pm 11.20)times 10^{-2})</span>, respectively. Also, the products related to <span>(B_{X}equiv mathcal {B}r(B^+rightarrow psi 'K^+)times mathcal {B}r(psi 'rightarrow J/psi eta ))</span> branching fractions are <span>(B_{psi _2(3823)}=(1.25^{+0.71}_{-0.53}pm 0.04)times 10^{-6})</span> and <span>(B_{psi (4040)}=(8.53pm 2.35pm 0.30)times 10^{-6})</span>. This represents the first calculation of this branching fraction using factorization. Our calculations indicate that <span>(F_X)</span> is <span>(F_{psi _{2}(3823)}=(6.55pm 1.88)times 10^{-2})</span> and <span>(F_{psi (4040)}=(14.33pm 4.15)times 10^{-2})</span> at <span>(mu =m_b/2)</span>. We have estimated <span>(B_{psi _{2}(3823)}=(0.26pm 0.05)times 10^{-6})</span> at <span>(mu =m_b/2)</span> and <span>(B_{psi (4040)}=(2.88pm 0.64)times 10^{-6})</span> at <span>(mu =2m_b)</span>.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084862","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
Correction to: Influence of Position-Dependent Effective Mass on One-Dimensional Bose-Einstein Condensates Using the Von Roos Approach 用Von Roos方法修正：位置相关有效质量对一维玻色-爱因斯坦凝聚的影响
IF 1.7 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-03-08 DOI: 10.1007/s00601-025-01990-0
Somia Miraoui, Abdelhakim Benkrane, Ahmed Hocine
{"title":"Correction to: Influence of Position-Dependent Effective Mass on One-Dimensional Bose-Einstein Condensates Using the Von Roos Approach","authors":"Somia Miraoui,&nbsp;Abdelhakim Benkrane,&nbsp;Ahmed Hocine","doi":"10.1007/s00601-025-01990-0","DOIUrl":"10.1007/s00601-025-01990-0","url":null,"abstract":"","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581217","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
Critical Stability of Few-Body Quantum Systems 少体量子系统的临界稳定性
IF 1.7 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-02-20 DOI: 10.1007/s00601-025-01989-7
T. Frederico, H. O. U. Fynbo, A. Kievsky, J. M. Richard
{"title":"Critical Stability of Few-Body Quantum Systems","authors":"T. Frederico,&nbsp;H. O. U. Fynbo,&nbsp;A. Kievsky,&nbsp;J. M. Richard","doi":"10.1007/s00601-025-01989-7","DOIUrl":"10.1007/s00601-025-01989-7","url":null,"abstract":"","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455683","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
Characterizing Motion States in the Restricted Five-Body Problem with Perturbing Forces 具有摄动力的受限五体问题运动状态的表征
IF 1.7 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-02-14 DOI: 10.1007/s00601-025-01988-8
Sanjeev Kumar, A. K. Awasthi
{"title":"Characterizing Motion States in the Restricted Five-Body Problem with Perturbing Forces","authors":"Sanjeev Kumar,&nbsp;A. K. Awasthi","doi":"10.1007/s00601-025-01988-8","DOIUrl":"10.1007/s00601-025-01988-8","url":null,"abstract":"<div><p>The <i>n</i>-body problem, a cornerstone of celestial mechanics, has been the subject of extensive research for centuries, with particular emphasis on the complexities of the three-body problem under various perturbations. These perturbations include oblateness, triaxiality, radiation pressure, and the effects of Coriolis and centrifugal forces. Recent advancements have shifted focus to systems involving more than three bodies, with notable work in the four-body problem. In this study, we extend the analysis to the five-body problem, examining its chaotic behavior and identifying regions of libration points. By varying the masses of the bodies across distinct surface points, we analyze the system’s dynamics, uncovering fractal zones within the problem. Additionally, we perform a stability analysis of the libration points, offering new insights into the behavior and stability of the five-body system. This research contributes to a deeper understanding of multi-body interactions and their implications in both theoretical and applied contexts.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404132","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
Impacts of Compression on the Ground and Low-Lying Excited Doublet States of Plasma-Embedded Lithium Atom 压缩对等离子体嵌入锂原子地面和低洼激发双重态的影响
IF 1.7 4区 物理与天体物理
Few-Body Systems Pub Date : 2025-02-06 DOI: 10.1007/s00601-025-01981-1
Salah Doma, Gamal Roston, Mostafa Ahmed
{"title":"Impacts of Compression on the Ground and Low-Lying Excited Doublet States of Plasma-Embedded Lithium Atom","authors":"Salah Doma,&nbsp;Gamal Roston,&nbsp;Mostafa Ahmed","doi":"10.1007/s00601-025-01981-1","DOIUrl":"10.1007/s00601-025-01981-1","url":null,"abstract":"<div><p>The variational Monte Carlo method is employed to conduct a comprehensive investigation of the compressed ground and excited states of plasma-embedded lithium atom within impenetrable spherical boxes of varying radii. The study focuses on the low-lying excited doublet states 1<span>(s^{{2}})</span><i>ns</i>, 1<span>(s^{{2}}n)</span>p, and 1<span>(s^{{2}}n)</span>d, utilizing plasma potentials such as the screened Coulomb (SCP), exponential cosine screened Coulomb (ECSCP), and Hulthén potentials. Energy eigenvalues are determined using appropriate trial wave functions, which account for electron–electron repulsion and spin parts to adhere to the Pauli Exclusion Principle. Moreover, two factors related to the wave function of the compressed system and ECSCP model are considered. The results reveal an intriguing relative ordering for the lithium atom using the three plasma models, with many of the findings being significant contributions yet to be explored.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00601-025-01981-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361925","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
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