Fermionic massive modes along cosmic strings

Details Fermionic massive modes along cosmic strings Fermionic massive modes along cosmic strings

2001-06-15

arxiv.org/abs/hep-ph/0106179v2

Phys.Rev. D64 (2001) 123505

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 15 figures, uses ReVTeX. Shortened version, accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.64.123505

The influence on cosmic string dynamics of fermionic massive bound states propagating in the vortex, and getting their mass only from coupling to the string forming Higgs field, is studied. Such massive fermionic currents are numerically found to exist for a wide range of model parameters and seen to modify drastically the usual string dynamics coming from the zero mode currents alone. In particular, by means of a quantization procedure, a new equation of state describing cosmic strings with any kind of fermionic current, massive or massless, is derived and found to involve, at least, one state parameter per trapped fermion species. This equation of state exhibits transitions from subsonic to supersonic regimes while the massive modes are filled.

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