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Journal of Chongqing University of Posts and Telecommunications

Approximate analytical solutions of Schrdinger for q-deformed Morse potential

Wenjiang Hu

Published Jan 1, 2013• 0 citations
OpenAlex

Abstract

Using Laplace integral transformation and the estimate transformation,the approximate analytical solutions of the 3-dimensional Schrdinger equation for q-deformed Morse potential is obtained.By means of expanding q-deformed Morse potential into the power series until the three order little term and smaller are ignored;sitting reasonably the parameter of wave function which is looked for makes the situation have essential change,so that the analytical solution without existence changes can turn into the approximate analytical solution existence;using reasonably terminal-value theorem and the convolution of Laplace integral transformation,and by applying the orthogonal condition of general Laguerre function,the explicit press of energy spectrum and the radial normalization eigenfunction of the quantum system are acquired.

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Using Laplace integral transformation and the estimate transformation,the approximate analytical solutions of the 3-dimensional Schrdinger equation for q-deformed Morse potential is obtained.By means of expanding q-deformed Morse potential into the power series until the three order little term and smaller are ignored;sitting reasonably the parameter of wave function which is looked for makes the situation have essential change,so that the analytical solution without existence changes can turn into the approximate analytical solution existence;using reasonably terminal-value theorem and the convolution of Laplace integral transformation,and by applying the orthogonal condition of general Laguerre function,the explicit press of energy spectrum and the radial normalization eigenfunction of the quantum system are acquired.
Using Laplace integral transformation and the estimate transformation,the approximate analytical solutions of the 3-dimensional Schrdingere quation for q-deformed Morse potential are obtained.By means of expanding q-deformed Morse potential into the power series until the three order little terms and smaller are ignored;looking for reasonably the parameter of wave function, make its analytical solution not be existence change into the approximate analytical solution existence;using reasonably terminal-value theorem and the convolution of Laplace integral transformation,and by applying the orthogonal condition of general Laguerre function;the explicit press of energy spectrum and the radial normalization eigenfunction of the quantum system are acquired unl(ρ)= (n!(2β2)2κ+1/(2κ+n+1)) 1/2 e-β2ρρκL2κ n(2β2ρ)and meanwhile,proper discussion and some conclusions are presented.
The approximate analytical solution of Schrodinger equation for Q-Deformed Rosen-Morse potential was investigated using Supersymmetry Quantum Mechanics (SUSY QM) method. The approximate bound state energy is given in the closed form and the corresponding approximate wave function for arbitrary l-state given for ground state wave function. The first excited state obtained using upper operator and ground state wave function. The special case is given for the ground state in various number of q. The existence of Rosen-Morse potential reduce energy spectra of system. The larger value of q, the smaller energy spectra of system.
In this paper, we introduce the exact solution for the wave function in the presence of potential energy, consisting of combination between q-deformed hyperbolic and exponential function with different argument. The functions we have used in the present communication can be regarded as a generalization of the Arai q-deformed function (modified q-deformed Morse potential). In this context, we have restricted our discussion for some particular cases of the q-deformed hyperbolic functions. This is due to the difficulty for dealing with most of the arguments included in the potential functions. For the most particular cases, the energy eigenfunctions are obtained, and the behavior is also discussed. It has been shown that the wave functions are sensitive to the variation in the value of q-deformed parameter as well as the strength of the potential parameter λ. Furthermore, the energy eigenvalues are also considered for some particular cases where the argument of the exponential function plays a strong role effecting its value.
The method of solving the radial Schrdinger equation is studied by under the tight coupling condition of several positivepower and inversepower potential functions. The precise analytic solutions and the conditions that determine the existence of analytic solution are searched when the potential of the radial Schrdinger equation is V（r）=α1r8＋α2r3+α3r2+β3r-1＋β2r-3＋β1r-4. According to the single valued, bounded and continuous stipulations of wave function in a quantum system, firstly, the asymptotic solution is solved when the radial coordinate r→∞ and r→0; secondly, the asymptotic solutions are combined with the series solutions in the neighborhood of irregular singularities; and then the power series coefficients are compared. A series of analytic solutions of the stationary state wave function and the corresponding energy level structure are deduced by tight coupling between the coefficients of potential functions for the radial Schrdinger equation. And the solutions are discussed and the conclusions are made.