Amruta Mishra, Hiranmaya Mishra
Published 1996-11-19Version 1
We compute the effective potential for $\phi^4$ theory with a squeezed coherent state type of construct for the ground state. The method essentially consists in optimising the basis at zero and finite temperatures. The gap equation becomes identical to resumming the infinite series of daisy and super daisy graphs while the effective potential includes multiloop effects and agrees with that obtained through composite operator formalism at finite temperature.
Comments: 15 pages, Revtex, No figures, to appear in Jou. of Phys.G(Nucl. and Part. Phys.)
Journal: J.Phys.G23:143-150,1997
Effective Potential of O(N) Linear Sigma Model at Finite Temperature
Effective Potential for $λφ^4$ Theory at Finite Temperature in $R\otimes S^{D-1}$ and $R\otimes H^{D-1}$
On Daisy and Superdaisy Resummation of the Effective Potential at Finite Temperature
