Casimir scaling from center vortices: Towards an understanding of the adjoint string tension

Journal Article · Sun Feb 01 00:00:00 EST 1998 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.57.2603· OSTI ID:568388

Faber, M ^[1]; Greensite, J ^[2]; Olejnik, S ^[3]

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1. Institut fuer Kernphysik, Technische Universitaet Wien, A-1040Vienna (Austria)
2. The Niels Bohr Institute, DK-2100Copenhagen O/ (Denmark)
3. Institute of Physics, Slovak Academy of Sciences, SK-84228Bratislava (Slovakia)

We argue that the approximate {open_quotes}Casimir scaling{close_quotes} of the string tensions of higher-representation Wilson loops is an effect due to the finite thickness of center vortex configurations. It is shown, in the context of a simple model of the Z{sub 2} vortex core, how vortex condensation in Yang-Mills theory can account for both Casimir scaling in intermediate size loops and color-screening in larger loops. An implication of our model is that the deviations from exact Casimir scaling, which tend to grow with loop size, become much more pronounced as the dimensionality of the group representation increases. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 568388
• Journal Information: Physical Review, D, Vol. 57, Issue 4; Other Information: PBD: Feb 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
YANG-MILLS THEORY
CASIMIR EFFECT
SCALING
VORTICES
STRING MODELS
WILSON LOOP
THICKNESS
COLOR MODEL
SCREENING
CONDENSATES
CONFINEMENT
SU GROUPS
QUANTUM CHROMODYNAMICS