Order of the Roberge-Weiss endpoint (finite size transition) in QCD

Journal Article · Tue Dec 01 00:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.111501· OSTI ID:21313435

D'Elia, Massimo ^[1]; Sanfilippo, Francesco ^[2]

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1. Dipartimento di Fisica, Universita di Genova and INFN, Via Dodecaneso 33, 16146 Genova (Italy)
2. Dipartimento di Fisica, Universita di Roma 'La Sapienza' and INFN, Piazzale A. Moro 5, 00185 Roma (Italy)

We consider the endpoint of the Roberge-Weiss (RW) first order transition line present for imaginary baryon chemical potentials. We remark that it coincides with the finite size transition relevant in the context of large N{sub c} QCD and study its order in the theory with two degenerate flavors. The RW endpoint is first order in the limit of large and small quark masses, while it weakens for intermediate masses where it is likely in the Ising 3D universality class. Phenomenological implications and further speculations about the QCD phase diagram are discuss0008.

• OSTI ID: 21313435
• Journal Information: Physical Review. D, Particles Fields, Vol. 80, Issue 11; Other Information: DOI: 10.1103/PhysRevD.80.111501; (c) 2009 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
FLAVOR MODEL
ISING MODEL
MASS
PHASE DIAGRAMS
POTENTIALS
QUANTUM CHROMODYNAMICS
QUARKS