共查询到19条相似文献,搜索用时 156 毫秒
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用一个新的变换求解了修正Pschl-Teler势的薛定谔方程束缚态,得到了能量本征值及相应的波函数. 相似文献
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用一个新的变换求解了修正Poeschl-Teller势的薛定谔方程束缚态,得到了能量本征值及相应的波函数。 相似文献
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提出一个四参数双原子分子势函数,对s波Schrdinger方程进行了严格求解,并采用一个简便的方法考虑了转动修正.该势函数对实验Rydberg-Klein-Rees曲线及振动-转动能级的计算精度远优于常用的Morse势,且将Morse势等势函数作为特例包括于其中.
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研究一类N维广义非线性Schrdinger方程的孤子解及其性质,研究非线性参数α变化(α→0及α→∞)时孤子性态的变化规律,同时研究该问题的数值解法,得到了该方程的PR差分格式的收敛性和稳定性条件. 相似文献
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本文从波函数ψ满足Schrdinger方程出发,对波函数须满足的基本条件(即ψ必须连续、有界及单值)进行剖析,指出只要给定的势函数V有界,则ψ及ψ′都自然连续;若V没有二阶极点,则ψ有界 相似文献
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Choon-Lin Ho 《Annals of Physics》2011,(6):1394-1407
In this paper we demonstrate how the recently reported exactly and quasi-exactly solvable models admitting quasinormal modes can be constructed and classified very simply and directly by the newly proposed prepotential approach. These new models were previously obtained within the Lie-algebraic approach. Unlike the Lie-algebraic approach, the prepotential approach does not require any knowledge of the underlying symmetry of the system. It treats both quasi-exact and exact solvabilities on the same footing, and gives the potential as well as the eigenfunctions and eigenvalues simultaneously. We also present three new models with quasinormal modes: a new exactly solvable Morse-like model, and two new quasi-exactly solvable models of the Scarf II and generalized Pöschl–Teller types. 相似文献
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Robert Milson 《International Journal of Theoretical Physics》1998,37(6):1735-1752
The present paper discusses the connectionbetween exactly solvable Schrodinger equations and theLiouville transformation. This transformation yields alarge class of exactly solvable potentials, including the exactly solvable potentials introduced byNatanzon. In addition, this class is shown to containtwo new families of exactly solvablepotentials. 相似文献
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Avinash Khare 《Pramana》1997,49(1):41-64
In the past ten years, the ideas of supersymmetry have been profitably applied to many nonrelativistic quantum mechanical problems. In particular, there is now a much deeper understanding of why certain potentials are analytically solvable. In this lecture I review the theoretical formulation of supersymmetric quantum mechanics and discuss many of its applications. I show that the well-known exactly solvable potentials can be understood in terms of a few basic ideas which include supersymmetric partner potentials and shape invariance. The connection between inverse scattering, isospectral potentials and supersymmetric quantum mechanics is discussed and multi-soliton solutions of the KdV equation are constructed. Further, it is pointed out that the connection between the solutions of the Dirac equation and the Schrödinger equation is exactly same as between the solutions of the MKdV and the KdV equations. 相似文献
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In an exactly solvable model of separable potentials a two channel scattering problem is solved in l = 0 state. The location and the width of a resonance are then defined in three different ways and the resonance parameters so extracted are then compared. This problem is of interest vis-a-vis the Δ(3, 3) resonance parameters. 相似文献
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New solvable one-dimensional quantum mechanical scattering problems are presented. They are obtained from known solvable potentials by multiple Darboux transformations in terms of virtual and pseudo virtual wavefunctions. The same method applied to confining potentials, e.g. Pöschl–Teller and the radial oscillator potentials, has generated the multi-indexed Jacobi and Laguerre polynomials. Simple multi-indexed formulas are derived for the transmission and reflection amplitudes of several solvable potentials. 相似文献
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Supersymmetric quantum mechanics is a powerful tool for generating exactly solvable potentials departing from a given initial one. In this article the first- and second-order supersymmetric transformations will be used to obtain new exactly solvable potentials departing from the complex oscillator. The corresponding Hamiltonians turn out to be ruled by polynomial Heisenberg algebras. By applying a mechanism to reduce to second the order of these algebras, the connection with the Painlevé IV equation is achieved, thus giving place to new solutions for the Painlevé IV equation. 相似文献
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用公认精确的密耦 (Close Coupling)方法、采用两种不同的相互作用势计算了He -O2 碰撞的态 态转动激发截面 (E =2 6.8meV) ,通过系统研究和计算发现 :低能散射时 ,He -O2 碰撞的弹性散射主要发生在小角部分 ,而非弹性转动激发主要发生在大角部分。研究表明 :转动激发截面对势能表面的方向性和散射角都非常敏感。 相似文献
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The Fokker–Planck equation associated with the two-dimensional stationary Schrödinger equation has the conservation law form that yields a pair of potential equations. The special form of Darboux transformation of the potential equations system is considered. As the potential variable is a nonlocal variable for the Schrödinger equation that provides the nonlocal Darboux transformation for the Schrödinger equation. This nonlocal transformation is applied for obtaining of the exactly solvable two-dimensional stationary Schrödinger equations. The examples of exactly solvable two-dimensional stationary Schrödinger operators with smooth potentials decaying at infinity are obtained. 相似文献
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Chun-Sheng Jia Ping-Quan Wang Jian-Yi Liu Su He 《International Journal of Theoretical Physics》2008,47(10):2513-2522
The relativistic problems of neutral fermions subject to a new partially exactly solvable PT-symmetric potential and an exactly solvable PT-symmetric hyperbolic cosecant potential in 1+1 dimensions are investigated. The Dirac equation with the double-well-like mass distribution in the background of the PT-symmetric vector potential coupling can be mapped into the Schrödinger-like equation with the partially exactly solvable double-well potential. The position-dependent effective mass Dirac equation with the PT-symmetric hyperbolic cosecant potential can be mapped into the Schrödinger-like equation with the exactly solvable modified Pöschl-Teller potential. The real relativistic energy levels and corresponding spinor wavefunctions for the bound states have been given in a closed form. 相似文献