Evidence for a Center Vortex Origin of the Adjoint String Tension
نویسنده
چکیده
Wilson loops in the adjoint representation are evaluated on cooled lattices in SU(2) lattice gauge theory. It is found that the string tension of an adjoint Wilson loop vanishes, if the loop is evaluated in a sub-ensemble of configurations in which no center vortex links the loop. This result supports our recent proposal that the adjoint string tension, in the Casimir-scaling regime, can be attributed to a center vortex mechanism.
منابع مشابه
ar X iv : h ep - l at / 9 90 40 04 v 1 6 A pr 1 99 9 Deconfinement in SU ( 2 ) Yang - Mills theory as a center vortex percolation transition
By fixing lattice Yang-Mills configurations to the maximal center gauge and subsequently applying the technique of center projection, one can identify center vortices in these configurations. Recently, center vortices have been shown to determine the string tension between static quarks at finite temperatures (center dominance); also, they correctly reproduce the deconfining transition to a pha...
متن کاملGauge invariant vortex vacuum textures and the gluon condensate
In SU(2) lattice gauge theory, a new self-restricted cooling procedure is developed which removes the SU(2)/Z2 coset fields from the lattice configurations and thus reveals the the Z2 vortex vacuum texture. The emerging gauge invariant vortex vacuum structure amounts to the full string tension. The action density of the vortex texture extrapolates to the continuum limit, and, hence, gives rise ...
متن کاملDetection of Center Vortices in the Lattice Yang-Mills Vacuum
We discuss the implementation of the “direct” maximal center gauge (a gauge which maximizes the lattice average of the squared-modulus of the trace of link variables), and its use in identifying Z2 center vortices in Yang-Mills vacuum configurations generated by lattice Monte Carlo. We find that center vortices identified in the vacuum state account for the full asymptotic string tension. Scali...
متن کاملX iv : h ep - t h / 97 12 24 8 v 2 5 J an 1 99 8 Center vortices and confinement vs . screening
Confinement in QCD is due to a condensate of thick vortices with fluxes in the center of the gauge group (center vortices), as proposed long ago by the author and others. It is well-known that such vortices lead to an area law for fundamental-representation Wilson loops, but what happens for screened (e.g., adjoint) Wilson loops has been less clear, and problems have arisen over the large-N lim...
متن کاملString tensions and deconfinement transition in the SU(4) center vortex model
A center vortex model for the infrared sector of SU(4) Yang-Mills theory is constructed such as to reproduce both the ratio between the zero-temperature quark and diquark string tensions known from lattice Yang-Mills theory, as well as the properties of the deconfinement transition. On this basis, the temperature dependence of the spatial quark and diquark string tensions is predicted. Though s...
متن کامل