Quark droplets with chiral symmetry in the Nambu-Jona-Lasinio model

Journal Article · Fri Sep 01 00:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.054036· OSTI ID:20871124

Yasui, S ^[1]; Hosaka, A ^[2]

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1. Physics Department, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro, Tokyo 152-8551 (Japan)
2. Research Center for Nuclear Physics (RCNP), Osaka University, Mihogaoka 10-1, Ibaraki, Osaka 567-0047 (Japan)

We discuss the stability of strangelets by considering dynamical chiral symmetry breaking. For quark droplets of finite volume, we formulate the Nambu-Jona-Lasinio model with a basis set of the quark wave functions in the chiral bag model. Chiral symmetry breaking for the finite volume bag is discussed in a mean field approximation. Effects of the pion cloud including the chiral Casimir effect are investigated. Physical quantities of the quark droplets such as masses and radii are obtained for quark droplets of baryon numbers A{<=}5. We also apply our model setting to the nucleon and discuss the stability of the quark droplets against nuclei.

• OSTI ID: 20871124
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
BAG MODEL
CASIMIR EFFECT
CHIRAL SYMMETRY
CHIRALITY
MEAN-FIELD THEORY
NUCLEONS
PIONS
QUARKS
REST MASS
STABILITY
SYMMETRY BREAKING
WAVE FUNCTIONS