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

Paolo Cea | Zendy; Leonardo Cosmai | Zendy; Massimo D’Elia | Zendy; Alessandro Papa | Zendy

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

Author(s) -

Paolo Cea,

Leonardo Cosmai,

Massimo D’Elia,

Alessandro Papa

Publication year - 2007

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2007/02/066

Subject(s) - analytic continuation , the imaginary , quantum chromodynamics , sign (mathematics) , continuation , imaginary time , lattice (music) , physics , theoretical physics , mathematics , mathematical analysis , computer science , particle physics , quantum mechanics , psychology , quantum , supersymmetric quantum mechanics , open quantum system , acoustics , psychotherapist , programming language

The method of analytic continuation from imaginary to real chemical potentialis one of the most powerful tools to circumvent the sign problem in latticeQCD. Here we test this method in a theory, 2-color QCD, which is free from thesign problem. We find that the method gives reliable results, withinappropriate ranges of the chemical potential, and that a considerableimprovement can be achieved if suitable functions are used to interpolate datawith imaginary chemical potential.Comment: 28 pages, 16 figures, references added, minor changes in Sections 3.3 and 4. Final version to appear in JHE

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