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Dual lattice representations for O(N) and CP(N-1) models with a chemical potential

URN to cite this document:
urn:nbn:de:bvb:355-epub-326734
DOI to cite this document:
10.5283/epub.32673
Bruckmann, Falk ; Gattringer, Christof ; Kloiber, Thomas ; Sulejmanpasic, Tin

This is the latest version of this item.

Date of publication of this fulltext: 29 Oct 2015 08:15



Abstract

We derive dual representations for O(N) and CP(N-1) models on the lattice. In terms of the dual variables the partition sums have only real and positive contributions also at finite chemical potential. Thus the complex action problem of the conventional formulation is overcome and using the dual variables Monte Carlo simulations are possible at arbitrary chemical potential.


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