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Casimir scaling in G(2) lattice gauge theory

Casimir scaling in G(2) lattice gauge theory

Authors :
Liptak, L.
Olejnik, S.
Source :
Phys.Rev.D78:074501,2008
Publication Year :
2008

Abstract

We computed potentials between static color sources from the six lowest representations of G(2) lattice gauge theory, in numerical simulations with the Wilson action on asymmetric lattices with nonperturbatively estimated values of the bare anisotropy. We present evidence for (approximate) Casimir scaling of the obtained intermediate string tensions. The agreement with the Casimir-scaling prediction improves by increasing the coupling beta in the weak-coupling region above the crossover observed in G(2) gauge theory. The result naturally fits into confinement models with magnetic disorder and vacuum domain structure, but may represent a challenge for other approaches.<br />Comment: 14 pages, 12 figures (24 EPS files), RevTeX4. In v2: typos corrected, discussion of systematic errors and of smearing expanded, references added. Version to appear in Phys. Rev. D

Details

Database :
arXiv
Journal :
Phys.Rev.D78:074501,2008
Publication Type :
Report
Accession number :
edsarx.0807.1390
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevD.78.074501