Original scientific paper
Perturbative solution of integro-differential equation for a system of identical bosons
Tapan Kumar Das
; Department of Physics, University of Calcutta, 92 A.P.C. Road, Calcutta 700 009, India
Rakhi Chattopadhyay
; Department of Physics, University of Calcutta, 92 A.P.C. Road, Calcutta 700 009, India
Abstract
We have solved the integro-differential equation for a system of A identical bosons interacting via two body potentials by applying a perturbative method up to the second order. Calculated binding energy has been compared with a solution by projection method. The perturbative solution is found to be fairly reliable for a soft potential and it improves with increasing particle number (A), whereas other numerical methods become very difficult with increasing particle number. Thus perturbation method becomes a useful alternative for large particle number and soft potentials.
Keywords
Hrčak ID:
302952
URI
Publication date:
2.5.1993.
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