Absence of Physical Walls in Hot Gauge Theories

Details Absence of Physical Walls in Hot Gauge Theories Absence of Physical Walls in Hot Gauge Theories

1995-10-18

arxiv.org/abs/hep-lat/9510029v1

Physics

High Energy Physics

High Energy Physics - Lattice

25 pages, Revtex

Scientific paper

This paper shows that there are no {\em physical} walls in the deconfined, high-temperature phase of $Z(2)$ lattice gauge theory. In a Hamiltonian formulation, the interface in the Wilson lines is not physical. The line interface and its energy are interpreted in terms of physical variables. They are associated with a difference between two partition functions. One includes only the configurations with even flux across the interface. The other is restricted to odd flux. Also, with matter present, there is no physical metastable state. However, the free energy is lowered by the matter. This effect is described in terms of physical variables.

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