Critical line from imaginary to real baryonic chemical potentials in two-color QCD

Journal Article · Sat Mar 01 00:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.051501· OSTI ID:21249676

Cea, Paolo; Cosmai, Leonardo; D'Elia, Massimo; Papa, Alessandro ^[1]; INFN-Sezione di Bari, I-70126 Bari ^[2]

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1. Dipartimento di Fisica dell'Universita di Bari and INFN-Sezione di Bari, I-70126 Bari (Italy)
2. Italy

The method of analytic continuation from imaginary to real chemical potentials {mu} is one of the few available techniques to study QCD at finite temperature and baryon density. One of its most appealing applications is the determination of the critical line for small {mu}: we perform a direct test of the validity of the method in this case by studying two-color QCD, where the sign problem is absent. The (pseudo)critical line is found to be analytic around {mu}{sup 2}=0, but a very large precision would be needed at imaginary {mu} to correctly predict the location of the critical line at real {mu}.

• OSTI ID: 21249676
• Journal Information: Physical Review. D, Particles Fields, Vol. 77, Issue 5; Other Information: DOI: 10.1103/PhysRevD.77.051501; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
COLOR MODEL
DENSITY
POTENTIALS
QUANTUM CHROMODYNAMICS