Light Goldstone boson and domain walls in the K⁰-condensed phase of high density quark matter

2001/08/30 by D. T. Son, Son, D. T.
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Nuclear Theory (nucl-th) #astro-ph #hep-ph #hep-th #nucl-th

paper · pdf · doi:10.48550/arxiv.hep-ph/0108260

8 pages

arxiv created 2001/08/30 · arxiv updated 2009/11/30

Abstract

It is pointed out that K⁰ 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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