Chiral symmetry breaking and vacuum polarization in a bag

Journal Article · Fri Dec 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.114003· OSTI ID:20868083

Yasui, S ^[1]

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1. Department of Physics, H-27, Tokyo Institute of Technology, Tokyo 152-8551 (Japan)

We study the effects of a finite quark mass in the hedgehog configuration in the two phase chiral bag model. We discuss the chiral properties, such as the fractional baryon number and the chiral Casimir energy, by using the Debye expansion for the analytical calculation and the Strutinsky's smearing method for the numerical computation. It is shown that the fractional baryon number carried by massive quarks in the vacuum is canceled by that in the meson sector. A finite term of the chiral Casimir energy is obtained with subtraction of the logarithmic divergence term.

• OSTI ID: 20868083
• Journal Information: Physical Review. D, Particles Fields, Vol. 74, Issue 11; Other Information: DOI: 10.1103/PhysRevD.74.114003; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BARYON NUMBER
CHIRAL SYMMETRY
CHIRALITY
MESONS
QUARKS
REST MASS
SYMMETRY BREAKING
VACUUM POLARIZATION