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Critical coupling for dynamical chiral-symmetry breaking
Phys. Rev. D 41, 672 – Published 15 January, 1990
DOI: https://doi.org/10.1103/PhysRevD.41.672
Abstract
We study chiral-symmetry breaking in a model of quantum chromodynamics (QCD). In our study we make a critical analysis of an approximation that is often used in QCD and other theories to simplify the Schwinger-Dyson equation for the fermion self-energy. Solving the Schwinger-Dyson equation numerically, without employing the approximation, we find that chiral symmetry is restored when the running coupling constant at zero momentum transfer falls below 0.890.
References (12)
- Kiyoshi Higashijima, Phys. Rev. D 29, 1228 (1983)
- C. D. Roberts, Ph.D. thesis, Flinders University of South Australia, 1987
- J. L. Richardson, Phys. Lett. 82B, 272 (1979)
- G. Krein, P. Tang, and A. G. Williams, Phys. Lett. B 215, 145 (1988)
- C. D. Roberts, R. T. Cahill, and J. Praschifka, Ann. Phys. (N.Y.) 188, 20 (1988)
- D. Atkinson and P. W. Johnson, Phys. Rev. D 37, 2296 (1988)
- K. Stam, Phys. Lett. 152B, 238 (1985) Joseph Otu and K. S. Viswanathan, Phys. Rev. D 34, 3920 (1986) A. Barducci et al., ibid. 38, 238 (1988)
- T. Appelquist, D. Carrier, L. C. R. Wijewardhana, and W. Zheng, Phys. Rev. Lett. 60, 1114 (1988) Thomas Appelquist, Kenneth Lane, and Uma Mahanta, ibid. 61, 1553 (1988) Andrew Cohen and Howard Georgi, Nucl. Phys. B314, 7 (1989)
- C. D. Roberts and R. T. Cahill, Phys. Rev. D 33, 1755 (1986)
- H. David Politzer, Nucl. Phys. B117, 397 (1976)
Omitted endnote
- A. G. Williams, G. Krein, and C. D. Roberts, University of Washington report, 1989 (unpublished)