Spatial string tension in the deconfined phase of (3+1)-dimensional SU(2) gauge theory
- 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), Vol. 71:19; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STRING MODELS
TEMPERATURE DEPENDENCE
UNIFIED GAUGE MODELS
CONFINEMENT
COUPLING CONSTANTS
FOUR-DIMENSIONAL CALCULATIONS
SU-2 GROUPS
COMPOSITE MODELS
EXTENDED PARTICLE MODEL
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
QUARK MODEL
SU GROUPS
SYMMETRY GROUPS
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)