Universality class of confining strings

@article{Diamantini1999UniversalityCO,
  title={Universality class of confining strings},
  author={M. C. Diamantini and H. Kleinert and C. Trugenberger},
  journal={Physics Letters B},
  year={1999},
  volume={457},
  pages={87-93}
}
Abstract A recently proposed model of confining strings has a non-local world-sheet action induced by a space-time Kalb–Ramond tensor field. Here we show that, in the large- D approximation, an infinite set of ghost- and tachyon-free truncations of the derivative expansion of this action all lead to c =1 models. Their infrared limit describes smooth strings with world-sheets of Hausdorff dimension D H =2 and long-range orientational order, as expected for QCD strings. 
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