The chiral phase transition of QED{sub 3} around the critical number of fermion flavors

Journal Article · Mon Sep 15 00:00:00 EDT 2014 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/J.AOP.2014.06.004· OSTI ID:22403394

Yin, Pei-lin ^[1]; Cui, Zhu-fang ^[2]; Feng, Hong-tao ^[3]; Zong, Hong-shi ^[2]

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1. Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics (China)
2. Department of Physics, Nanjing University, Nanjing 210093 (China)
3. Department of Physics, Southeast University, Nanjing 211189 (China)

At zero temperature and density, the nature of the chiral phase transition in QED{sub 3} with N{sub f} massless fermion flavors is investigated. To this end, in Landau gauge, we numerically solve the coupled Dyson–Schwinger equations for the fermion and boson propagator within the bare and simplified Ball–Chiu vertices separately. It is found that, in the bare vertex approximation, the system undergoes a high-order continuous phase transition from the Nambu–Goldstone phase into the Wigner phase when the number of fermion flavors N{sub f} reaches the critical number N{sub f,c}, while the system exhibits a typical characteristic of second-order phase transition for the simplified Ball–Chiu vertex.

• OSTI ID: 22403394
• Journal Information: Annals of Physics (New York), Vol. 348; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSONS
CHIRALITY
FERMIONS
FLAVOR MODEL
PHASE TRANSFORMATIONS
PROPAGATOR
QUANTUM ELECTRODYNAMICS
WIGNER THEORY