Some applications of renormalized RPA in bosonic field theories
H. Hansen, G. Chanfray
Abstract
We present some applications of the renormalized RPA in bosonic field theories. We first present some developments for the explicit calculation of the total energy in Phi4 theory and discuss its phase structure in 1+1 dimensions. We also demonstrate that the Goldstone theorem is satisfied in the O(N) model within the renormalized RPA.
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