Pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities

Details Pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities Pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities

2008-08-26

arxiv.org/abs/0808.3490v1

Phys.Rev.D79:014016,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 8 figures

Scientific paper

10.1103/PhysRevD.79.014016

The properties of pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities are studied within a model of the Nambu--Jona-Lasinio type. Our previous analysis is extended to Goldstone bosons with hidden flavor and to higher-lying modes which stay massive in the chiral limit. The bosons are constructed explicitly by solving the Bethe-Salpeter equation for quark-quark scattering in random phase approximation. The masses and weak decay constants of the Goldstone bosons are found in good agreement with predictions from the low-energy effective theory. In the non-Goldstone sector we find an SU(3) octet which is weakly bound, while the singlet appears to be unbound.

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