Abstract
Two methods leading to general prescriptions for the construction of the time independent perturbation expansions for bound states to all orders are discussed. The two methods differ by the choice of the zeroth-order wave functions. In both cases, the expansions are simplified by the use of non-orthonormalized zeroth-order wave functions. The terms of the expansions are described by means of diagrams. The accuracy of the expansions is tested by a calculation of two eigen-values of the Mathieu equation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
