Comparing the Nambu-Goto string with LGT results

Details Comparing the Nambu-Goto string with LGT results Comparing the Nambu-Goto string with LGT results

2005-01-27

arxiv.org/abs/hep-lat/0501027v2

JHEP 0503 (2005) 026

Physics

High Energy Physics

High Energy Physics - Lattice

25 pages, 4 eps figures; added a reference, included remarks, corrected a typo; version accepted for publication in JHEP

Scientific paper

10.1088/1126-6708/2005/03/026

We discuss a way to evaluate the full prediction for the interquark potential which is expected from the effective Nambu-Goto string model. We check the correctness of the prescription reproducing the results obtained with the zeta function regularization for the first two perturbative orders. We compare the predictions with existing Monte Carlo data for the (2+1) dimensional Z(2), SU(2) and SU(3) gauge theories: in the low temperature regime, we find good agreement for large enough interquark distances, but an increasing mismatch between theoretical predictions and numerical results is observed as shorter and shorter distances are investigated. On the contrary, at high temperatures (approaching the deconfinement transition from below) a remarkable agreement between Monte Carlo data and the expectations from the Nambu-Goto effective string is observed for a wide range of interquark distances.

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