Science Diliman, Vol 15, No 1 (2003)

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Study of the Perturbation to a Bose-Einstein Gas

L. Chan

Abstract


We developed a new approach to the perturbation theory for the effective Hamiltonian of condensate particles in Fock space. Using this new theory, we can easily analyze the effect of including a somewhat problematic term in the work of Ezawa et al. We thus showed that indeed, the inclusion of this term in the perturbation potential is justified.

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