1201.6119 (G. Fejos et al.)

Finite temperature symmetry restoration in the U_L(3)xU_R(3) linear
sigma model from a large-n approximation    [PDF]

G. Fejos, A. Patkos

A recently proposed approximate large-n ground state solution of the
U_L(n)xU_R(n) symmetric linear sigma model is investigated at finite
temperature. We study the coupled evaporation of two condensates corresponding
to the symmetry breaking pattern U_L(n)xU_R(n) -> U_V(n) -> U_V(n-1), realized
by the ground state in certain parts of the coupling space. The region of the
fluctuation induced first order transitions and its second order boundary is
mapped out. The existence of a tricritical point is conjectured.

View original: http://arxiv.org/abs/1201.6119