Topological structure of SU(2) gluodynamics at T>0 : An analysis using the Symanzik action and Neuberger overlap fermions

Journal Article · Sun Mar 01 00:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.054505· OSTI ID:21260093

Bornyakov, V G; Luschevskaya, E V; Morozov, S M; Polikarpov, M I; Ilgenfritz, E -M; Mueller-Preussker, M ^[1]

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1. Institute for High Energy Physics, Protvino, 142281 (Russian Federation) and Institute of Theoretical and Experimental Physics, B. Cheremushkinskaya 25, Moscow, 117259 (Russian Federation)

We study SU(2) gluodynamics at finite temperature on both sides of the deconfining phase transition. We create the lattice ensembles using the tree-level tadpole-improved Symanzik action. The Neuberger overlap Dirac operator is used to determine the following three aspects of vacuum structure: (i) The topological susceptibility is evaluated at various temperatures across the phase transition, (ii) the overlap fermion spectral density is determined and found to depend on the Polyakov loop above the phase transition and (iii) the corresponding localization properties of low-lying eigenmodes are investigated. Finally, we compare with zero temperature results.

• OSTI ID: 21260093
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 5; Other Information: DOI: 10.1103/PhysRevD.79.054505; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
DIRAC OPERATORS
FERMIONS
GLUONS
PHASE TRANSFORMATIONS
SPECTRAL DENSITY
SU-2 GROUPS