Phase transitions in low dimensional psi^4 systems

Victor Barsan (1)

1 Department of Theoretical Physics

The phase transition in a planar array of weakly coupled Ginzburg-Landau chains with real order parameter is studied, using an original variant of the two level approximation. The results are extended to the quantum phase transition in a chain of quantum double well oscillators, coupled with an elastic interaction, using the matrix transfer method.

Mots clés: Physical Sciences

Victor Barsan. Phase transitions in low dimensional psi^4 systems. Philosophical Magazine, 2007, 88 (01), pp.121-134. ⟨10.1080/14786430701777419⟩. ⟨hal-00513846⟩