Pseudoscalar Goldstone bosons in the color-flavor locked phase at moderate densities
arXiv:0707.0632 · doi:10.1103/PhysRevD.76.074024
Abstract
The properties of the pseudoscalar Goldstone bosons in the color-flavor locked phase at moderate densities are studied within a model of the Nambu--Jona-Lasinio type. The Goldstone bosons are constructed explicitly by solving the Bethe-Salpeter equation for quark-quark scattering in random phase approximation. Main focus of our investigations are (i) the weak decay constant in the chiral limit, (ii) the masses of the flavored (pseudo-) Goldstone bosons for non-zero but equal quark masses, (iii) their masses and effective chemical potentials for non-equal quark masses, and (iv) the onset of kaon condensation. We compare our results with the predictions of the low-energy effective field theory. The deviations from results obtained in the weak-coupling limit are discussed in detail.
18 pages, 12 figures
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- Two lectures on color superconductivity
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Cited by in corpus (6)
- Color superconductivity in dense quark matter
- Bulk viscosity in kaon-condensed color-flavor locked quark matter
- Impacts of anomaly on nuclear and neutron star equation of state based on a parity doublet model
- Pseudo Nambu-Goldstone modes in neutron stars
- Pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities
- Phenomenological QCD equations of state for neutron star mergers, a talk presented at CPOD17