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Ground-state energy eigenvalue calculation of the quantum mechanical well V(x)=\frac{1}{2}kx^{2}+\lambda {x^{4}} via analytical transfer matrix method

Artit Hutem and Chanun Sricheewin

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We consider a fundamental quantum mechanical bound-state problem in the form of the quartic-well potential V(x)=\frac{1}{2}kx^{2}+\lambda{x^{4}} . The analytical transfer matrix method is applied. This yields a quantization condition from which we can calculate the phase contributions and ground-state energy eigenvalues numerically. We also compare the results with those obtained from other typical means popular among physics students, namely the numerical shooting method, perturbation theory and the standard WKB method.


PACS

03.65.Fd Algebraic methods

02.10.Ud Linear algebra

02.10.Yn Matrix theory

Subjects

Mathematical physics

Quantum information and quantum mechanics

Dates

Issue 3 (May 2008)

Received 16 November 2007, in final form 22 February 2008

Published 25 April 2008



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