Collective excitations, instabilities, and the ground state in dense quark matter

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E. V. Gorbar,¹ Michio Hashimoto,¹ V. A. Miransky,¹ and I. A. Shovkovy²
¹Department of Applied Mathematics, University of Western Ontario, London, Ontario N6A 5B7, Canada
²Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe–Universität, D-60438 Frankfurt am Main, Germany

Received 2 March 2006; published 7 June 2006

Westudy the spectrum of light plasmons in the (gapped andgapless) two-flavor color superconducting phases and its connection with thechromomagnetic instabilities and the structure of the ground state. Itis revealed that the chromomagnetic instabilities in the 4th–7th and8th gluonic channels correspond to two very different plasmon spectra.These spectra lead us to the unequivocal conclusion about theexistence of gluonic condensates (some of which can be spatiallyinhomogeneous) in the ground state. We also argue that spatiallyinhomogeneous gluonic condensates should exist in the three-flavor quark matterwith the values of the mass of a strange quarkcorresponding to the gapless color-flavor locked state.

URL:	http://link.aps.org/doi/10.1103/PhysRevD.73.111502
DOI:	10.1103/PhysRevD.73.111502
PACS:	12.38.-t; 11.15.Ex; 11.30.Qc 12.38.-t Quantum chromodynamics 11.15.Ex Spontaneous breaking of gauge symmetries 11.30.Qc Spontaneous and radiative symmetry breaking in particles and fields YEAR: 2006
KEYWORDS:	quark matter, flavour model, quark mass, ground states

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