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APS » Phys. Rev. D » Volume 73 » Issue 12

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Phys. Rev. D 73, 125022 (2006) [7 pages]

Meson current in the color-flavor-locked phase

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A. Gerhold and T. Schäfer
Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA

Received 10 April 2006; published 26 June 2006

Westudy the stability of the color-flavor-locked (CFL) phase of densequark matter with regard to the formation of a nonzeroGoldstone boson current. We show that an instability appears inthe vicinity of the point µ_s=Delta which marks the appearanceof gapless fermion modes in the CFL phase. Here, µ_s=m_s²/(2µ)is the shift in chemical potential due to the strangequark mass and Delta is the gap in the chirallimit. We show that in the Goldstone boson current phaseall components of the magnetic screening mass are real. Inthis work we do not take into account homogeneous kaoncondensation. We study the effects of an instanton induced interactionof the magnitude required to suppress kaon condensation.

©2006 The American Physical Society

URL:	http://link.aps.org/doi/10.1103/PhysRevD.73.125022
DOI:	10.1103/PhysRevD.73.125022
PACS:	12.38.Mh; 12.38.Aw 12.38.Mh Quark–gluon plasma 12.38.Aw General properties of QCD (dynamics, confinement, etc.) YEAR: 2006

REFERENCES (27)

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