More on the SU(2) deconfinement transition in the mixed action

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.32· OSTI ID:531942

Gavai, R V ^[1]; Mathur, M ^[2]

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1. Theoretical Physics Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005 (India)
2. Dipartimento di Fisica dell Universita and INFN, Piazza Torricelli 2 Pisa-56100 (Italy)

We examine certain issues related to the universality of the SU(2) lattice gauge theory at nonzero temperatures. Using Monte Carlo simulations and strong coupling expansions, we study the behavior of the deconfinement transition in an extended coupling plane ({beta},{beta}{sub A}) around the tricritical point where the deconfinement transition changes from second to first order. Our numerical results on N{sub {tau}}=2,4,6,8 lattices show that the tricritical point first moves down towards the Wilson axis and then moves slowly upwards, if at all, as the lattice spacing is reduced. Lattices with very large N{sub {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. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: University of Minnesota
• DOE Contract Number: FG02-87ER40328
• OSTI ID: 531942
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BAG MODEL
CONFINEMENT
COUPLING
ISING MODEL
LATTICE FIELD THEORY
MONTE CARLO METHOD
SIMULATION
SU-2 GROUPS