A new approach to the twodimensional sigma model with a topological charge
Abstract
Based on character decomposition, a dual transformation is introduced leading to two formulations of the theory which should allow for a removal/softening of the sign problem in the original version. Very preliminar numerical results are commented and remaining problems discussed.
 Publication:

Proceedings of the 31st International Symposium on Lattice Field Theory (LATTICE 2013). 29 July3 August
 Pub Date:
 2013
 DOI:
 10.22323/1.187.0338
 arXiv:
 arXiv:1311.4292
 Bibcode:
 2013slft.confE.338T
 Keywords:

 High Energy Physics  Lattice;
 Condensed Matter  Statistical Mechanics;
 High Energy Physics  Theory
 EPrint:
 7 pages, 1 figure, 1 table