QCD Strings as Constrained Grassmannian Sigma Model:
High Energy Physics - Lattice
2009-10-22 v1 High Energy Physics - Theory
Abstract
We present calculations for the effective action of string world sheet in R3 and R4 utilizing its correspondence with the constrained Grassmannian sigma model. Minimal surfaces describe the dynamics of open strings while harmonic surfaces describe that of closed strings. The one-loop effective action for these are calculated with instanton and anti-instanton background, reprsenting N-string interactions at the tree level. The effective action is found to be the partition function of a classical modified Coulomb gas in the confining phase, with a dynamically generated mass gap.
Cite
@article{arxiv.hep-lat/9410017,
title = {QCD Strings as Constrained Grassmannian Sigma Model:},
author = {K. S. Viswanathan and R. Parthasarathy},
journal= {arXiv preprint arXiv:hep-lat/9410017},
year = {2009}
}
Comments
22 pages, Preprint: SFU HEP-116-94