ar X iv : h ep - l at / 9 80 10 33 v 1 2 3 Ja n 19 98 1 Quark Confinement in the Deconfined Phase
نویسنده
چکیده
In cylindrical volumes with C-periodic boundary conditions in the long direction, static quarks are confined even in the gluon plasma phase due to the presence of interfaces separating the three distinct high-temperature phases. An effective " string tension " is computed analytically using a dilute gas of interfaces. At Tc, the deconfined-deconfined interfaces are completely wet by the confined phase and the high-temperature " string tension " turns into the usual string tension below Tc. Finite size formulae are derived, which allow to extract interface and string tensions from the expectation value of a single Polyakov loop. A cluster algorithm is built for the 3-d three-state Potts model and an improved estimator for the Polyakov loop is constructed, based on the number of clusters wrapping around the C-periodic direction of the cylinder.
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