Published January 1994
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Chiral symmetry breaking in QCD with linearly rising confinement potential
- 1. International Centre for Theoretical Physics, Trieste (Italy)
- 2. Technische Univ., Vienna (Austria). Inst. fuer Kernphysik
- 3. Slovenska Akademia Vied, Bratislava (Slovakia). Fyzikalny Ustav
Description
Chiral symmetry breaking is explored within QCD with linearly rising confinement potential at the Nambu-Jona-Lasinio (NJL) prescription. The dynamical quark mass is obtained from the gap-equation in terms of the string tension σ, i.e. m=2 √σ/π=0.33 GeV at σ=0.27 GeV2. The phenomenological constants of the NJL local four-quark interactions G1 and G2 are found equal and expressed in terms of the string tension and the confinement radius. It is shown that the spectra of low-lying quark-antiquark collective excitations coincide with those predicted by the NJL model. (author). 16 refs
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Additional details
Publishing Information
- Imprint Pagination
- 14 p.
- Report number
- IC--94/28
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 25045554
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ACTION INTEGRAL; CHIRAL SYMMETRY; COLLECTIVE EXCITATIONS; QUANTUM CHROMODYNAMICS; QUARK-QUARK INTERACTIONS; STRING MODELS; SYMMETRY BREAKING
- Descriptors DEC
- ENERGY-LEVEL TRANSITIONS; EXCITATION; EXTENDED PARTICLE MODEL; FIELD THEORIES; INTEGRALS; INTERACTIONS; MATHEMATICAL MODELS; PARTICLE INTERACTIONS; PARTICLE MODELS; QUANTUM FIELD THEORY; SYMMETRY