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Ambiguities in chiral-symmetry breaking using the effective potential approach

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Zeitschrift für Physik C Particles and Fields

Abstract

Using a form of the effective potential for composite operators with a variational approach we show that it is possible to get different directions of the chiral phase transition in QCD. Which one occurs depends on the way the Schwinger-Dyson equation for the fermion self-energy is used in the 2-loop term of the effective potential. We must choose the 2-loop term which agrees with phenomenology in each form of the effective potential.

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Authors and Affiliations

  1. Laboratoire de Physique Mathématique, Université des Sciences et Techniques du Languedoc, F-34095, Montpellier Cedex 5, France

    J. C. Montero

  2. Instituto de Física Teórica, Universidade Estadual Paulista, Rua Pamplona, 145 CEP 01405, São Paulo, SP, Brasil

    V. Pleitez

Authors
  1. J. C. Montero
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  2. V. Pleitez
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Montero, J.C., Pleitez, V. Ambiguities in chiral-symmetry breaking using the effective potential approach. Z. Phys. C - Particles and Fields 50, 149–153 (1991). https://doi.org/10.1007/BF01558570

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  • DOI: https://doi.org/10.1007/BF01558570

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