Light Goldstone boson and domain walls in the $K^0$-condensed phase of high density quark matter

D. T. Son

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arXiv · hep-ph/0108260

Light Goldstone boson and domain walls in the $K^0$-condensed phase of high density quark matter

D. T. Son

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Abstract

It is pointed out that $K^0$ condensation in high density matter gives rise to an extremely light Goldstone boson whose mass comes entirely from weak interactions. This implies the existence of metastable non-topological domain walls with a long lifetime. We comment on the mass of the superfluid mode if baryon number is violated.

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D. T. Son. 2001-08-30. Light Goldstone boson and domain walls in the $K^0$-condensed phase of high density quark matter. https://arxiv.org/abs/hep-ph/0108260

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