Analytic continuation in QCD-like theories at finite density and finite isospin

Details Analytic continuation in QCD-like theories at finite density and finite isospin Analytic continuation in QCD-like theories at finite density and finite isospin

2010-01-25

arxiv.org/abs/1001.4390v1

PoS LAT2009:192,2009

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 6 figures, Contribution to The XXVII International Symposium on Lattice Field Theory, Beijing, July 25-31, 2009

Scientific paper

The method of analytic continuation is one of the most powerful tools to circumvent the sign problem in lattice QCD. The present study is part of a larger project which, based on the investigation of QCD-like theories which are free of the sign problem, is aimed at testing the validity of the method of analytic continuation and at improving its predictivity, in view of its application to real QCD. We have shown that a considerable improvement can be achieved if suitable functions are used to interpolate data with imaginary chemical potential. We present results obtained in a theory free of the sign problem such as two-color QCD at finite chemical potential.

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