Roberge-Weiss endpoint in N{sub f}=2 QCD

Journal Article · Tue Mar 01 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.054505· OSTI ID:21537439

Bonati, Claudio ^[1]; Cossu, Guido ^[2]; D'Elia, Massimo ^[3]; Sanfilippo, Francesco ^[4]

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1. Dipartimento di Fisica, Universita di Pisa and INFN, Sezione di Pisa, Largo Pontecorvo 3, 56127 Pisa (Italy)
2. Theory Center, IPNS, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801 (Japan)
3. Dipartimento di Fisica, Universita di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova (Italy)
4. Dipartimento di Fisica, Universita di Roma 'La Sapienza' and INFN, Sezione di Roma, Piazzale A. Moro 5, 00185 Roma (Italy)

We present the results of extensive simulations regarding the critical behavior at the endpoint of the Roberge-Weiss transition for N{sub f}=2 QCD. We confirm early evidence, presented in Ref. [M. D'Elia and F. Sanfilippo, Phys. Rev. D 80, 111501(R) (2009).], according to which the Roberge-Weiss endpoint is first order in the limit of large or small quark masses, and second order for intermediate masses. A systematic study of the transition strength as a function of the quark mass in the first order regions, permits us to estimate the tricritical values of the quark mass separating the second order region from the first order ones.

• OSTI ID: 21537439
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevD.83.054505; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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