Spatial string tension in the deconfined phase of (3+1)-dimensional SU(2) gauge theory

Journal Article · Mon Nov 08 04:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.3059· OSTI ID:5578288

Bali, G S; Fingberg, J; Heller, U M; Karsch, F; Schilling, K ^[1]

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1. Fachbereich Physik, Universitaet-Gesamthochschule Wuppertal, Gausstrasse 20, D-42097 Wuppertal (Germany) Supercomputer Computations Research Institute, The Florida State University, Tallahassee, Florida 32306-44052 (United States) Hochstleistungsrechezentrum, c/o Kernforschungsanlage Juelich, D-52425 Juelich (Germany) Fakultaet fuer Physik, Universitaet Bielefeld, P.O. Box 100131, D-33501 Bielefeld (Germany)

We present results of a detailed investigation of the temperature dependence of the spatial string tension in SU(2) gauge theory. We show, for the first time, that the spatial string tension is scaling on the lattice and thus is nonvanishing in the continuum limit. It is temperature independent below [ital T][sub [ital c]] and rises rapidly above. For temperatures larger than 2[ital T][sub [ital c]] we find a scaling behavior consistent with [sigma][sub [ital s]]([ital T])=(0.136[plus minus]0.011)[ital g][sup 4]([ital T])[ital T][sup 2], where [ital g]([ital T]) is the two-loop running coupling constant with a scale parameter determined as [Lambda][sub [ital T]]=(0.076[plus minus]0.013)[ital T][sub [ital c]].

• DOE Contract Number: FC05-85ER25000; FG05-92ER40742
• OSTI ID: 5578288
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:19; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662110* -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPOSITE MODELS
CONFINEMENT
COUPLING CONSTANTS
EXTENDED PARTICLE MODEL
FOUR-DIMENSIONAL CALCULATIONS
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
QUARK MODEL
STRING MODELS
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
TEMPERATURE DEPENDENCE
UNIFIED GAUGE MODELS