A Study of Symmetry Restoration at Finite Temperature in the O(4) Model Using Anisotropic Lattices

الأصل · EN

Results of investigations of the O(4) spin model at finite temperature using anisotropic lattices are presented. In both the large N approximation and the numerical simulations using the Wolff cluster algorithm we find that the ratio of the symmetry restoration temperature T SR to the Higgs mass m H is independent of the anisotropy. We obtain a lower bound of 0.59 ± 0.04 for the ratio, T SR/m H, at m Ha ≃ 0.5, which is lowered further by about 10% at m Ha ≃ 1.