Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1998-11-25
Eur.Phys.J.C8:335-342,1999
Physics
High Energy Physics
High Energy Physics - Lattice
to appear in EPJC
Scientific paper
10.1007/s100529901078
Finite temperature SU(2) lattice gauge theory is investigated in a 3D cubic box with fixed boundary conditions provided by a discretized, static BPS monopole solution with varying core scale $\mu$. Using heating and cooling techniques we establish that for discrete $\mu$-values stable classical solutions either of self-dual or of pure magnetic type exist inside the box. Having switched on quantum fluctuations we compute the Polyakov line and other local operators. For different $\mu$ and at varying temperatures near the deconfinement transition we study the influence of the boundary condition on the vacuum inside the box. In contrast to the pure magnetic background field case, for the self-dual one we observe confinement even for temperatures quite far above the critical one.
Ilgenfritz Ernst-Michael
Molodtsov S. V.
Muller-Preussker Michael
Veselov A. I.
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