Gonçalves, L.L.; Coutinho, L.P.S.; de Lima, J.P. - In: Physica A: Statistical Mechanics and its Applications 345 (2005) 1, pp. 71-91
Gaussian transformation. The complete critical behaviour and the critical surface for the quantum and classical transitions, in … various classical/quantum regimes are also determined exactly. It is shown that, besides the tricritical point associated with … the classical transition, there are also two quantum critical points: a bicritical point where the classical second …