Multi-soliton solutions in the chiral quark soliton model

Details Multi-soliton solutions in the chiral quark soliton model Multi-soliton solutions in the chiral quark soliton model

2004-05-28

arxiv.org/abs/hep-ph/0405282v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

59 pages, 11 figures; invited paper for "Progress in Soliton Research", Nova Science Publishers (NY)

Scientific paper

In this article a series of solutions with higher baryon numbers in the chiral quark soliton model are reported. The chiral quark soliton model is a simple quark model that incorporates the basic features of QCD. The B=2 axially symmetric soliton solution within this model was obtained numerically. For $B \ge 3$, in a series of our papers we obtained $B=3 \sim 9,17$ minimal energy soliton solutions with point-like symmetries and $B=3 \sim 5$ axially symmetric saddle-point solutions, using rational map ansatz constructed for multi-baryon number skyrmions. An interesting property of the solutions is that the symmetry of the background configuration is reflected in the degeneracy of the valence quark spectra. We also confirm the existence of the quark shell structure. The shells consist of the four-fold degenerate ground state and higher levels with various patterns, which are realized by the interplay of two symmetries, $SU(2)_L\times SU(2)_R$ symmetry for the quarks and the symmetries of the chiral fields. To obtain correct physical observable, the quantum corrections are necessary. We shall show the quantum states of the axisymmetric solitons within the collective quantization. Upon quantization, various observable spectra of the chiral solitons are obtained. According to the Finkelstein-Rubinstein constraints, the quantum numbers of the solitons coincide with the physical observations only for B=2 and 4 while B=3 and 5 do not. The SU(3) extension of the B=2 soliton is also studied to predict various strange dibaryon states within this model.

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