Published April 1991 | Version v1
Journal article Metadata-only

Ambiguities in chiral-symmetry breaking using the effective potential approach

Creators

  • 1. Montpellier-2 Univ., 34 (France). Dept. de Physique Mathematique
  • 2. Sao Paulo Univ., SP (Brazil). Inst. de Fisica Teorica

Description

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. (orig.)

Additional details

Publishing Information

Journal Title
Zeitschrift fuer Physik. C
Journal Volume
50
Journal Issue
1
Series
Z. Phys., C.
Journal Page Range
149-153
ISSN
0170-9739
CODEN
ZPCFD

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
22035539
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
CHIRAL SYMMETRY; CHIRALITY; COMPOSITE MODELS; DYSON REPRESENTATION; FEYNMAN DIAGRAM; PHASE TRANSFORMATIONS; POTENTIALS; QUANTUM CHROMODYNAMICS; QUANTUM OPERATORS; QUARKS; SCHWINGER FUNCTIONAL EQUATIONS; SELF-ENERGY; SYMMETRY BREAKING; VARIATIONAL METHODS
Descriptors DEC
DIAGRAMS; DIFFERENTIAL EQUATIONS; ELEMENTARY PARTICLES; ENERGY; EQUATIONS; FERMIONS; FIELD THEORIES; INFORMATION; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; PARTICLE MODELS; PARTICLE PROPERTIES; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SYMMETRY