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Quantum solitons of the nonlinear sigma-model with broken chiral symmetry

A. P. Kostyuk·A. P. Kobushkin·N. M. Chepilko·T. Okazaki
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Abstract

It is proved that the quantum-mechanical consideration of global breathing of a hedgehog-like field configuration leads to the dynamically stable soliton solutions in the nonlinear sigma-model without the Skyrme term. Such solutions exist only when chiral symmetry of the model is broken.

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A. P. Kostyuk, A. P. Kobushkin, N. M. Chepilko, T. Okazaki. 1993-08-18. Quantum solitons of the nonlinear sigma-model with broken chiral symmetry. https://arxiv.org/abs/hep-ph/9308286

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