Computation of the vortex free energy in SU(2) gauge theory

Authors
Kovacs, TG Tomboulis, ET
Citation
Tg. Kovacs et Et. Tomboulis, Computation of the vortex free energy in SU(2) gauge theory, PHYS REV L, 85(4), 2000, pp. 704-707
Citations number
8
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
4
Year of publication
2000
Pages
704 - 707
Database
ISI
SICI code
0031-9007(20000724)85:4<704:COTVFE>2.0.ZU;2-E
Abstract
We present the first measurement of the vortex free-energy order parameter at weak coupling for SU(2) in simulations employing multihistogram methods. The result shows that the excitation probability for a sufficiently thick vortex in the vacuum tends to unity. This is rigorously known to provide a necessary and sufficient condition for maintaining confinement at weak coup ling in SU(N) gauge theories.