Dynamics of symmetry breaking and tachyonic preheating
Dec, 2000
7 pages
Published in:
- Phys.Rev.Lett. 87 (2001) 011601
e-Print:
- hep-ph/0012142 [hep-ph]
Report number:
- CITA-2000-60,
- SU-ITP-00-35,
- IFT-UAM-CSIC-00-40,
- FT-UAM-00-26,
- CERN-TH-2000-365
Citations per year
Abstract:
We reconsider the old problem of the dynamics of spontaneous symmetry breaking using 3d lattice simulations, and develop a theory of tachyonic preheating, which occurs due to the spinodal instability of the scalar field. Tachyonic preheating is so efficient that symmetry breaking typically completes within a single oscillation of the field distribution as it rolls towards the minimum of its effective potential. As an application of this theory we consider preheating in the hybrid inflation scenario, including SUSY-motivated F-term and D-term inflationary models. We show that preheating in hybrid inflation is typically tachyonic and the stage of oscillations of a homogeneous component of the scalar fields driving inflation ends after a single oscillation. Our results may also be relevant for the theory of the formation of disoriented chiral condensates in heavy ion collisions.Note:
- 7 pages, 6 figures. Higher quality figures and computer generated movies in gif format illustrating our results can be found at http://physics.stanford.edu/gfelder/hybrid
- lattice field theory
- phi**n model
- dimension: 3
- spontaneous symmetry breaking
- tachyon: preheating
- inflation: hybrid
- effective potential
- numerical calculations
References(36)
Figures(6)