检索结果-南通市图书馆

Semi-Relativistic Two-Body States of Spinless Particles with a Scalar-Type Interaction Potential

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2018年第2期69卷 127-130页

作者： k. e. thylwe kTH-Mechanics Royal institute of Technology S-100 44 Stockholm Swede

A semi-relativistic quantum approximation for mutual scalar interaction potentials is outlined and *** are consistent with two-body Dirac equations for bound states of zero total angular momentum. Two-body effects nea... 详细信息

关键词： relativistic quantum mechanics two-body effects two-body scalar potentials bound states quarkpotential

Spinless particles in the field of unequal scalar vector Yukawa potentials

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2013年第4期22卷 81-86页

作者： M.Hamzavi S.M.Ikhdair k.e.thylwe Department of Science and engineering Abhar Branch Islamic Azad University Abhar Iran Department of electrical and electronic engineering Near East University 922022 Nicosia North Cyprus Mersin 10 Turkey Department of Physics Faculty of Science An-Najah National University Nablus West Bank Palestine kTH-Mechanics Royal Institute of Technology S-100 44 Stockholm Sweden

We present analytical bound state solutions of the spin-zero k.e.n–Gordon （kG） particles in the field of unequal mix-ture of scalar and vector Yukawa potentials within the framework of the approximation scheme to the centrifugal potential term for any arbitrary l-state. The approximate energy eigenvalues and unnormalized wave functions are obtained in closed forms using a simple shortcut of the Nikiforov–Uvarov （NU） method. Further, we solve the kG–Yukawa problem for its exact numerical energy eigenvalues via the amplitude phase （AP） method to test the accuracy of the present solutions found by using the NU method. Our numerical tests using energy calculations demonstrate the existence of inter-dimensional degeneracy amongst the energy states of the kG–Yukawa problem. The dependence of the energy on the dimension D is numerically discussed for spatial dimensions D = 2–6.

关键词： k.e.n–Gordon equation Yukawa potential D-dimensional space Nikiforov–Uvarov and amplitude phase methods

Semi-Relativistic Reflection and Transmission Coefficients for Two Spinless Particles Separated by a Rectangular-Shaped Potential Barrier

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2016年第10期65卷 389-395页

作者： k.e.thylwe O.J.Oluwadare k.J.Oyewumi kTH-Mechanics Royal institute of Technology Department of Physics Federal University Oye-Ekiti Theoretical Physics Section Department of PhysicsUniversity of Ilorin

A generalized Schr¨odinger approximation,due to Ikhdair & Sever,of the semi-relativistic two-body problem with a rectangular barrier in(1+1) dimensions is compared with exact *** and approximate transmission and reflection coefficients are obtained in terms of local wave *** approximate transmission and reflection coefficients turn out to be surprisingly accurate in an energy range |∈-V0| ere μ is the reduced mass,∈ the scattering energy,and V_0 the barrier top *** approximate wave numbers are less accurate.

关键词： two-body relativistic equation rectangular barrier transmission 1+1D relativistic scattering semi-relativistic approximation spinless Salpeter equation

Non-Relativistic Phase Shifts for Scattering on Generalized Radial Yukawa Potentials

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2016年第4期65卷 434-440页

作者： O.J.Oluwadare k.e.thylwe k.J.Oyewumi Department of Physics Federal University Oye-Ekiti kTH-Mechanics Royal institute of Technology Theoretical Physics Section Department of PhysicsUniversity of Ilorin

Non-relativistic phase shifts for a generalized Yukawa potential V(r) =-V_0( e^(-αr)/r)-V_1( e^(-2αr)/r^2) are studied by the amplitude-phase method and by a frequently used analytic method based on a Pekeris-type approximation of power-law potential *** variations of V_1 seem to have marginal effects on the effective potential and on exact phase ***,as pointed out in this study,a Pekeris-type approximation in scattering applications often implies serious distortions of both effective potentials and phase *** Pekeris-type based analytic approximation in this study seems to give low-quality scattering results for this model potential at low energies.

关键词： quantum mechanics scattering partial waves resonances

Two-Body Scattering in(1+1) Dimensions by a Semi-relativistic Formalism and a Hulthén Interaction Potential

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2015年第4期63卷 423-426页

作者： S.Hassanabadi M.Ghominejad k.-e.thylwe Physics Department Semnan University kTH-Mechanics Royal Institute of Technology

Scattering solutions of two-body Spinless Salpeter equation(SSe) are investigated in the center of mass frame with a repulsive, symmetric Hulth′en potential in one spatial dimension. Transmission and reflection coeff... 详细信息

关键词： Spinless Salpeter equation transmission and reflection coefficients Hulthén potential

Approximate Analytical Solution of the Yukawa Potential with Arbitrary Angular Momenta

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2012年第8期29卷 16-19页

作者： M.Hamzavi M.Movahedi k.-e.thylwe A.A.Rajabi Department of Basic Sciences Shahrood BranchIslamic Azad UniversityShahroodIran Department of Physics Golestan UniversityGorganIran kTH-Mechanics Royal Institute of TechnologyS-10044 StockholmSweden Physics Department Shahrood University of TechnologyShahroodIran

The Yukawa potential is often used to compute bound-state normalizations and energy levels of neutral *** using the generalized parametric Nikiforov–Uvarov method,we obtain approximate analytical solutions of the radial Schrödinger equation for the Yukawa *** energy eigenvalues and the corresponding eigenfunctions are calculated in closed *** numerical results are presented and show that these results are in good agreement with those obtained previously by other ***,we find the energy levels of the familiar pure Coulomb potential energy levels when the screening parameter of the Yukawa potential goes to zero.

关键词： potential methods Yukawa