Analytic continuation from imaginary to real chemical potential in two-color QCD

Details Analytic continuation from imaginary to real chemical potential in two-color QCD Analytic continuation from imaginary to real chemical potential in two-color QCD

2006-12-15

arxiv.org/abs/hep-lat/0612018v2

JHEP 0702:066,2007

Physics

High Energy Physics

High Energy Physics - Lattice

28 pages, 16 figures, references added, minor changes in Sections 3.3 and 4. Final version to appear in JHEP

Scientific paper

10.1088/1126-6708/2007/02/066

The method of analytic continuation from imaginary to real chemical potential is one of the most powerful tools to circumvent the sign problem in lattice QCD. Here we test this method in a theory, 2-color QCD, which is free from the sign problem. We find that the method gives reliable results, within appropriate ranges of the chemical potential, and that a considerable improvement can be achieved if suitable functions are used to interpolate data with imaginary chemical potential.

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