Properties of the phase transition in the transverse Ising model
L. De Cesare, Ileana Rabuffo, Dimo I. Uzunov
The phase transition properties of the quantum spin{1/2 Ising model in a transverse magnetic eld are reconsidered with the help of the mean eld approximation, the Ginzburg criterion, and the renormalization group theory.A special attention is paid to the phase transitions whose properties are determined by variations of the external transverse eld and to the low{temperature phase transitions due to temperature variations.The classical{to{quantum crossover is investigated in details.A new crossover eect is established and discussed.
Journal of Physical Studies•Jan 1, 1998•1 citation