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

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.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [4] ;  [2] ;  [3] ;  [2] ;  [2]
  1. Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics (China)
  2. (China)
  3. Department of Physics, Nanjing University, Nanjing 210093 (China)
  4. Department of Physics, Southeast University, Nanjing 211189 (China)
Publication Date:
OSTI Identifier:
22403394
Resource Type:
Journal Article
Resource Relation:
Journal Name: Annals of Physics (New York); Journal Volume: 348; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BOSONS; CHIRALITY; FERMIONS; FLAVOR MODEL; PHASE TRANSFORMATIONS; PROPAGATOR; QUANTUM ELECTRODYNAMICS; WIGNER THEORY