Non-equilibrium Goldstone phenomenon in tachyonic preheating

Details Non-equilibrium Goldstone phenomenon in tachyonic preheating Non-equilibrium Goldstone phenomenon in tachyonic preheating

2003-03-18

arxiv.org/abs/hep-ph/0303147v3

Phys.Rev. D68 (2003) 063512

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 LaTeX pages, 5 figures, version published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.68.063512

The dominance of the direct production of elementary Goldstone waves is demonstrated in tachyonic preheating by numerically determining the evolution of the dispersion relation, the equation of state and the kinetic power spectra for the angular degree of freedom of the complex matter field. The importance of the domain structure in the order parameter distribution for the quantitative understanding of the excitation mechanism is emphasized. Evidence is presented for the very early decoupling of the low-momentum Goldstone modes.

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