Monte Carlo study of the SU(2)xSU(2) chiral model on a two-dimensional random lattice - Li, W.-Z.; Zhang, J.-B. (Elsevier)
Monte Carlo (MC) simulations of the two-dimensional random lattice SU(2)xSU(2) chiral model defined on an NxN lattice are performed. The results of energy and specific heat per spin show that the system enters into the crossover region after β〉1.0+/-0.05, but no evidence of a phase transition is found. In addition, we analyse the finite size effects, and find no obvious differences with different lattice sizes when N 〉 8. It confirms the correspondence between the two-dimensional SU(2)xSU(2) chiral model and the four-dimensional SU(2) gauge theory in the random lattice formulation.
http://linkinghub.elsevier.com/retrieve/pii/0370-2693(88)91122-7
Keywords: U