Abstract
We describe a class of relativistic models incorporating a finite density of matter in which spontaneous breakdown of continuous symmetries leads to a lesser number of Nambu-Goldstone bosons than that required by the Goldstone theorem. This class, in particular, describes the dynamics of the kaon condensate in the color-flavor locked phase of high density QCD. We describe the spectrum of low energy excitations in this dynamics and show that, despite the presence of a condensate and gapless excitations, this system is not a superfluid.
Original language | English (US) |
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Pages (from-to) | 4 |
Number of pages | 1 |
Journal | Physical Review Letters |
Volume | 88 |
Issue number | 11 |
DOIs | |
State | Published - 2002 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)