More On The SU(2) Deconfinement Transition In The Mixed Action

Details More On The SU(2) Deconfinement Transition In The Mixed Action More On The SU(2) Deconfinement Transition In The Mixed Action

1995-12-08

arxiv.org/abs/hep-lat/9512015v3

Physics

High Energy Physics

High Energy Physics - Lattice

LaTeX, 35 Pages including 8 Postscript Figures, Final version to be published in Phys. Rev. D, Title changed in the journal, A

Scientific paper

We examine certain issues related to the universality of the SU(2) lattice gauge theory at non-zero temperatures. Using Monte Carlo simulations and strong coupling expansions, we study the behavior of the deconfinement transition in an extended coupling plane (beta, beta_A) around the tricritical point where the deconfinement transition changes from second to first order. Our numerical results on N_tau =2,4,6,8 lattices show that the tricritical point first moves down towards the Wilson axis and and then moves slowly upwards, if at all, as the lattice spacing is reduced. Lattices with very large N_tau seem to be therefore necessary for the mixed action to exhibit the critical exponents of the three dimensional Ising model for positive values of the adjoint coupling.

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