Non-Abelian strings in high-density QCD: Zero modes and interactions
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China)
- Department of Physics, Keio University, Hiyoshi, Yokohama, Kanagawa 223-8521 (Japan)
- ECT, Villa Tambosi, strada delle Tabarelle, 286, I 38050 Villazzano (Tennessee), Italy (United States)
The most fundamental strings in high-density color superconductivity are the non-Abelian semisuperfluid strings which have color-gauge flux tubes but behave as superfluid vortices in the energetic point of view. We show that in addition to the usual translational zero modes, these vortices have normalizable orientational zero modes in the internal space, associated with the color-flavor locking symmetry broken in the presence of the strings. The interaction among two parallel non-Abelian semisuperfluid strings is derived for general relative orientational zero modes to show the universal repulsion. This implies that the previously known superfluid vortices, formed by spontaneously broken U(1){sub B}, are unstable to decay. Moreover, our result proves the stability of color superconductors in the presence of external color-gauge fields.
- OSTI ID:
- 21250533
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 4; Other Information: DOI: 10.1103/PhysRevD.78.045002; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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