Color-flavor locked phase of high density QCD at nonzero strange quark mass

Journal Article · Sat Jan 01 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.014011· OSTI ID:20705708

Kryjevski, Andrei; Yamada, Daisuke ^[1]

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1. Department of Physics and Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195 (United States)

We compute free energy of quark matter at asymptotically high baryon number density in the presence of nonzero strange quark mass including dynamics of pseudo Nambu-Goldstone bosons due to chiral symmetry breaking, extending previously existing analysis based on perturbative expansion in m{sub s}{sup 2}/4{mu}{delta}. We demonstrate that the CFLK{sup 0} state has lower free energy than the symmetric CFL state for 0<m{sub s}{sup 2}/4{mu}{delta}<2/3. We also calculate the spectrum of the fermionic quasiparticle excitations about the kaon condensed ground state in the regime m{sub s}{sup 2}/4{mu}{delta}{approx}1 and find that (m{sub s}{sup 2}/4{mu}{delta}){sub crit}=2/3 for the CFL-gCFL phase transition, the leading order result reported in 20, is not modified.

• OSTI ID: 20705708
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON NUMBER
CHIRAL SYMMETRY
EXCITATION
FLAVOR MODEL
FREE ENERGY
GOLDSTONE BOSONS
GROUND STATES
KAONS
PERTURBATION THEORY
PHASE TRANSFORMATIONS
QUANTUM CHROMODYNAMICS
QUARK MATTER
REST MASS
S QUARKS
SYMMETRY BREAKING