Effective String Picture for Confining Gauge Theories at Finite Temperature

Details Effective String Picture for Confining Gauge Theories at Finite Temperature Effective String Picture for Confining Gauge Theories at Finite Temperature

2003-12-02

arxiv.org/abs/hep-lat/0312005v1

Physics

High Energy Physics

High Energy Physics - Lattice

Talk given at ``Confinement 2003'', RIKEN, Wako, Japan, July 21-24, 2003; 5 pages, 2 figures, uses ws-procs9x6.cls

Scientific paper

We study the ``effective string picture'' of confinement, deriving theoretical predictions for the interquark potential at finite temperature. At low temperatures, the leading string correction to the linear confining potential between a heavy quark-antiquark pair is the "L\"uscher term''. Assuming a Nambu-Goto effective string action, subleading contributions can be worked out in an analytical way. We also discuss the contribution given by a possible ``boundary term'' in the effective action, and compare these predictions with high precision results from simulations of lattice Z(2) gauge theory in three dimensions, obtained with an algorithm that exploits the duality of the Z(2) gauge model with the Ising spin model.

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