Effective Fermion Masses of Order gT in High Temperature Gauge Theories with Exact Chiral Invariance

Jun, 1982
22 pages
Published in:
  • Phys.Rev.D 26 (1982) 2789
Report number:
  • PRINT-82-0423 (PENN)

Citations per year

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Abstract: (APS)
It is shown that, at finite temperature, chiral invariance does not imply that fermion propagators have poles at K2=0. Instead, a zero-momentum fermion has energy K0=M, where M2=g2C(R)T28 and C(R) is the quadratic Casimir of the fermion representation. The dispersion relation for K→≠0 is computed and can be crudely approximated (to within 10%) by K0≈(M2+K→2)12. Applications to high-temperature QCD, SU(2)×U(1), and grand unified theories are discussed.
  • field theory: finite temperature
  • FERMION: MASS SPECTRUM
  • MASS SPECTRUM: FERMION
  • SYMMETRY: CHIRAL
  • QUANTUM CHROMODYNAMICS
  • GAUGE FIELD THEORY: SU(2) X U(1)
  • GRAND UNIFIED THEORY
  • TEMPERATURE: HIGH
  • FERMION: PROPAGATOR
  • RENORMALIZATION