Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2003-09-22
Physics
High Energy Physics
High Energy Physics - Lattice
Lattice2003(nonzero), 3 pages, 2 figures
Scientific paper
10.1016/S0920-5632(03)02652-5
The effective string picture of confinement is used to derive theoretical predictions for the interquark potential at finite temperature. At short distances, the leading string correction to the linear confining potential between a heavy quark-antiquark pair is the "L\"uscher term''. We assume a Nambu--Goto effective string action, and work out subleading contributions in an analytical way. We discuss the contribution given by a possible ``boundary term'' in the effective action, comparing these predictions with results from simulations of lattice $Z_2$ gauge theory in three dimensions, obtained with an algorithm which exploits the duality of the $Z_2$ gauge model with the Ising spin model.
Caselle Michele
Hasenbusch Martin
Panero Marco
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