Wilson loops stability in the gauge/string correspondence release_zbbi2fr5fvcpfaqxikoo4po3fe

by Raul E. Arias, Guillermo A. Silva

Released as a article .

2009  

Abstract

We study the stability of some classical string worldsheet solutions employed for computing the potential energy between two static fundamental quarks in confining and non-confining gravity duals. We discuss the fixing of the diffeomorphism invariance of the string action, its relation with the fluctuation orientation and the interpretation of the quark mass substraction worldsheet needed for computing the potential energy in smooth (confining) gravity background. We consider various dual gravity backgrounds and show by a numerical analysis the existence of instabilities under linear fluctuations for classical string embedding solutions having positive length function derivative L'(r_0)>0. Finally we make a brief discussion of 't Hooft loops in non-conformal backgrounds.
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Type  article
Stage   accepted
Date   2009-12-29
Version   v3
Language   en ?
arXiv  0911.0662v3
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