Few-Body Systems最新文献_第7页

Stability of Equilibrium Points in Modified Elliptic Restricted Three-Body Problem with Various Perturbation Sources 各种扰动源下修正椭圆型受限三体问题平衡点的稳定性

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2026-01-19 DOI: 10.1007/s00601-026-02026-x

Muhammad Bayu Saputra, Handhika Satrio Ramadhan, Ibnu Nurul Huda, Leonardus Brahmantyo Putra

{"title":"Stability of Equilibrium Points in Modified Elliptic Restricted Three-Body Problem with Various Perturbation Sources","authors":"Muhammad Bayu Saputra, Handhika Satrio Ramadhan, Ibnu Nurul Huda, Leonardus Brahmantyo Putra","doi":"10.1007/s00601-026-02026-x","DOIUrl":"10.1007/s00601-026-02026-x","url":null,"abstract":"<div>This study examines the dynamics of the third body in an elliptic restricted three-body problem (ERTBP) framework, taking into account perturbations from radiation pressure, oblateness, and elongation of the primary bodies, as well as disk-like structures. The objectives are to determine the positions and stability of the equilibrium points, assess how these points shift under the influence of perturbations, and evaluate the dependence of their stability on the orbital eccentricity and perturbation parameters. The ERTBP model is modified to include a radiating, oblate primary body and an elongated secondary body modeled as a finite straight segment, alongside perturbations from a surrounding disk. The system’s equations of motion are numerically solved using parameters from perturbed and classical cases. Equilibrium positions are computed over a range of eccentricities and perturbation values, and stability is analyzed using linearized equations and eigenvalue methods. In all cases, we have found three collinear ((L_1), (L_2), (L_3)) and two non-collinear ((L_4), (L_5)) equilibrium points solutions. The inclusion of radiation, oblateness, elongation using a finite straight segment, and disk perturbation systematically displaces each equilibrium point from its classical location, with the magnitude and direction of the displacement varying with the perturbation parameter. Stability analysis confirms that the collinear points remain linearly unstable under all tested conditions. Meanwhile, non-collinear points are stable under a specific condition. We investigate the stability boundary of these points as a function of orbital eccentricity and we found there is a critical range of eccentricity values within which stability is preserved.</div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"67 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026980","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

Efficient Determination of Eigenenergies and Eigenstates of N ((N=3)–4) Identical 1D Bosons and Fermions Under External Harmonic Confinement 外谐波约束下N （(N=3) -4）相同一维玻色子和费米子本征能和本征态的有效测定

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2026-01-12 DOI: 10.1007/s00601-025-02025-4

J. D. Norris, D. Blume

引用次数: 0

Calculation of Cross Sections for H-H Collision Using the Close-Coupling Method 用紧密耦合法计算H-H碰撞截面

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2025-12-29 DOI: 10.1007/s00601-025-02023-6

Akinori Igarashi

引用次数: 0

Going Beyond the Two-Channel Model: Systematic Approach to Multi-Channel Momentum-Space Contact-Interactions Models 超越双通道模型：多通道动量-空间接触-相互作用模型的系统方法

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2025-12-25 DOI: 10.1007/s00601-025-02024-5

Yaakov Yudkin, Fatema Hamodi-Gzal, Lev Khaykovich

{"title":"Going Beyond the Two-Channel Model: Systematic Approach to Multi-Channel Momentum-Space Contact-Interactions Models","authors":"Yaakov Yudkin, Fatema Hamodi-Gzal, Lev Khaykovich","doi":"10.1007/s00601-025-02024-5","DOIUrl":"10.1007/s00601-025-02024-5","url":null,"abstract":"<div>Few-body scattering and loosely bound states in the vicinity of an isolated narrow Feshbach resonance are well described by a conceptually simple contact interaction two-channel model, where an open atomic continuum channel is coupled to a closed molecular channel. However, real systems are often characterized by the multiplicity of both continuum and molecular channels. Here we develop a systematic framework to deal with multi-channel problems within a contact interaction approximation. We demonstrate the differences and similarities of adding a molecular or atomic channel to the two-channel model. By means of direct comparison, we show that while an additional atomic channel makes loosely bound states shallower, an additional molecular channel makes them more deeply bound. This approach facilitates the study of the influence of multi-channel environments on few-body physics in a systematic manner by gradually increasing the level of complexity. Furthermore, we account for real atomic systems whose understanding can benefit from this study.</div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"67 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00601-025-02024-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145831208","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

Analysis of Sakata-Taketani Equation with a conformable derivative 具有相容导数的Sakata-Taketani方程的分析

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2025-12-03 DOI: 10.1007/s00601-025-02022-7

Souheib Merad, Asma Merad

引用次数: 0

SU(1, 1) Coherent States for the Dunkl–Klein–Gordon Equation in its Canonical Form Dunkl-Klein-Gordon方程标准形式下的SU（1,1）相干态

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2025-12-01 DOI: 10.1007/s00601-025-02017-4

M. Salazar–Ramírez, J. A. Martínez–Nuño, M. R. Cordero–López

引用次数: 0

New Types of Hydrogenlike Matter Composed of Electron(s) and Meson(s) 由电子和介子组成的新型类氢物质

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2025-11-28 DOI: 10.1007/s00601-025-02021-8

Jun-Feng Wang, Zhi-Feng Sun, Zi-Yue Cui, Cheng-Qun Pang

{"title":"New Types of Hydrogenlike Matter Composed of Electron(s) and Meson(s)","authors":"Jun-Feng Wang, Zhi-Feng Sun, Zi-Yue Cui, Cheng-Qun Pang","doi":"10.1007/s00601-025-02021-8","DOIUrl":"10.1007/s00601-025-02021-8","url":null,"abstract":"<div>In the present work, we predict the existence of new types of hydrogenlike matter, including hydrogenlike atoms ((pi ^+e^-), (K^+e^-), (D^+e^-)), hydrogenlike molecular ions ((pi ^+pi ^+e^-), (K^+K^+e^-), (D^+D^+e^-)) and hydrogenlike molecules ((pi ^+pi ^+e^-e^-), (K^+K^+e^-e^-), (D^+D^+e^-e^-)). By solving the Schrödinger equation, the binding energy of hydrogenlike atoms is obtained as (E_n=-frac{1}{2n^2}). For hydrogenlike molecular ions and molecules, the variational method is employed to calculate the binding energies, i.e., (E_+=-0.587) and (E_0=-1.139) for hydrogenlike molecular ions and molecules, respectively. And the bond lengths for hydrogenlike molecular ions and molecules are also calculated, whose values are 2.003 and 1.414, respectively. Here all the quantities are in atomic units for convenience. In addition, the strong interaction between the two constituent mesons is considered in our calculations, where we find that its influence on the hydrogenlike molecular ions and molecules can be neglected. Comparisons of hydrogenlike molecular ion and molecule with the systems governed by the strong interaction are made, which suggests the possible existence of doubly heavy triquark, hidden heavy-flavor tetraquarks and doubly heavy tetraquarks. Hopefully, these types of matter would be observed in the future with the improvement of accuracy in the high energy physical experiments.</div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"67 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145612324","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

Dispersion Coefficients for Interactions Among Screened-Heliumlike Atoms 屏蔽类氦原子相互作用的色散系数

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2025-11-28 DOI: 10.1007/s00601-025-02018-3

Yi-Hui Zhao, Zishi Jiang, Sabyasachi Kar

引用次数: 0

Lie Point Symmetries and Conservation Law for Symplectic Schrödinger Equation 辛氏Schrödinger方程的李点对称性与守恒定律

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2025-11-18 DOI: 10.1007/s00601-025-02020-9

R. R. Luz, J. C. A. Soares, F. S. Costa, J. V. C. Sousa

{"title":"Lie Point Symmetries and Conservation Law for Symplectic Schrödinger Equation","authors":"R. R. Luz, J. C. A. Soares, F. S. Costa, J. V. C. Sousa","doi":"10.1007/s00601-025-02020-9","DOIUrl":"10.1007/s00601-025-02020-9","url":null,"abstract":"<div>In this work, we solve the nonrelativistic symplectic Schrödinger-type equation for a two-body system within the framework of symplectic quantum mechanics. By employing a Lie algebraic approach, we obtain an explicit solution for the wave function in phase space. Subsequently, we derive the corresponding Wigner function and analyze its behavior. As an application, we investigate the heavy quark-antiquark system, specifically the (coverline{c}) meson, which interacts through a linear term of the Cornell potential model. The Wigner function is studied to describe the ground state of the meson. Furthermore, our results indicate that small variations in kinetic momentum significantly affect the maximum possible relative quark-antiquark separation q in (textrm{GeV}^{-1}). This suggests the existence of an upper limit for the Wigner function curves of the heavy quark-antiquark pair, dependent on the kinetic energy, as illustrated in our graphical analysis. These findings align with previous results in the literature. We also emphasize that the methodology adopted for the study of this equation is based on the theory of Lie groups for differential equations, and with application in the calculation of conservation laws using the Noether theorem.</div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"66 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145561081","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

Atom Number Fluctuations For Strongly Interacting Bosons in Anharmonic Trap. 非调和阱中强相互作用玻色子的原子数波动。

IF 1.8 4区物理与天体物理

Few-Body Systems Pub Date : 2025-11-12 DOI: 10.1007/s00601-025-02019-2

Pankaj Kumar Debnath, Satadal Bhattacharyya, N. D. Chavda

引用次数: 0