Ising transition in dimerized XY quantum spin chain
arXiv:cond-mat/0105584 · doi:10.1088/0253-6102/37/4/492
Abstract
In the present paper, we proposed a simple spin-1/2 model which provides a exactly solvable example to study the Ising criticality with central charge c=1/2. By mapping it onto the real Majorana fermions, the Ising critical behavior is explored explicitly, although its bosonized form is not the double frequency sine-Gordon model.
8 pages