Chiral symmetry in excited baryons
نویسندگان
چکیده
Chiral symmetry is expected to be approximately restored in excited baryons, which is a consequence of quite general symmetry based arguments. However, such a restoration cannot be described in the framework of naive constituent quark models. Then chiral potential quark model (Generalised Nambu-Jona-Lasinio model) is used to draw a microscopic picture of such a restoration: the axial charge operator is built explicitly, the behaviour of the diagonal and off-diagonal axial baryon charges as well as the effective decoupling of pions are discussed in detail.
منابع مشابه
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