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- W2052484588 abstract "Equal-time commutators of fields with charges are calculated in a cavity approximation to the MIT bag model, with N flavours of non-interacting quarks confined to a rigid spherical cavity and SU(N) symmetry arbitrarily broken by mass terms. It is proved that inside the cavity the algebra is identical with that of free field theory, whilst on the boundary quark fields commute with axial charges. Vector divergences and sigma commutators belong to a (N,N) + (N, N) multiplet of chiral SU(N) × SU(N). Axial divergences contain additional surface terms which do not contribute to sigma commutators. A non-strange quark mass in the range 20–44 MeV is required to give a value 30–70 MeV for the nucleon matrix element of the sigma commutator relevant to pion-nucleon scattering." @default.
- W2052484588 created "2016-06-24" @default.
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- W2052484588 date "1976-03-01" @default.
- W2052484588 modified "2023-09-27" @default.
- W2052484588 title "Current algebra of quarks confined to a cavity" @default.
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- W2052484588 doi "https://doi.org/10.1016/0550-3213(76)90269-8" @default.
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