Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-02
Phys.Rev. D72 (2005) 094002
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTeX4, 20 pages, 4 Postscript figures, uses epsfig.sty, typos corrected
Scientific paper
10.1103/PhysRevD.72.094002
In this paper, we discuss the transition to the semiclassical regime in excited hadrons, and consequently, the restoration of chiral symmetry for these states. We use a generalised Nambu-Jona-Lasinio model with the interaction between quarks in the form of the instantaneous Lorentz-vector confining potential. This model is known to provide spontaneous breaking of chiral symmetry in the vacuum via the standard selfenergy loops for valence quarks. It has been shown recently that the effective single-quark potential is of the Lorentz-scalar nature, for the low-lying hadrons, while, for the high-lying states, it becomes a pure Lorentz vector and hence the model exhibits the restoration of chiral symmetry. We demonstrate explicitly the quantum nature of chiral symmetry breaking, the absence of chiral symmetry breaking in the classical limit as well as the transition to the semiclassical regime for excited states, where the effect of chiral symmetry breaking becomes only a small correction to the classical contributions.
Glozman Leonid Ya.
Nefediev A. V.
Ribeiro Emilio F. J. T.
No associations
LandOfFree
Chiral symmetry restoration in excited hadrons, quantum fluctuations, and quasiclassics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chiral symmetry restoration in excited hadrons, quantum fluctuations, and quasiclassics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chiral symmetry restoration in excited hadrons, quantum fluctuations, and quasiclassics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-134163