Energy spectrum of interacting gas: cluster expansion method
Hao-Dan Li,
Shi-Lin Li,
Yu-Jie Chen
et al.
Abstract:In this paper, we calculate the energy spectrum of interacting gases by converting the cluster expansion method in statistical mechanics into a method of solving energy eigenvalues. We obtain an explicit expression of the energy eigenvalue, by which we can calculate the eigenvalue of an interacting gas from the interparticle potential directly. As an example, we calculate the energy spectrum for an interacting gas with soft-sphere potentials.
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