Goldstone excitations from spinodal instability

Abstract

The squared mass of a complex scalar field is turned dynamically into negative by its O(2)-invariant coupling to a real field slowly rolling down in a quadratic potential. The emergence of gapless excitations is studied in real time simulations after spinodal instability occurs. Careful tests demonstrate that the Goldstone modes appear almost instantly after the symmetry breaking is over, much before thermal equilibrium is established.

10 Latex pages, 8 Figures, version accepted for publication in PRD

References in corpus (9)

• Dynamics of Symmetry Breaking and Tachyonic Preheating
• Tachyonic Instability and Dynamics of Spontaneous Symmetry Breaking
• Dynamics of tachyonic preheating after hybrid inflation
• Nonequilibrium time evolution of the spectral function in quantum field theory
• Particle production from symmetry breaking after inflation and leptogenesis
• Spectral function at high temperature in the classical approximation
• Dynamics of coupled bosonic systems with applications to preheating
• Nonequilibrium evolution in scalar O(N) models with spontaneous symmetry breaking
• Ising-like dynamical signatures and the end-point of the QCD transition line

Cited by in corpus (13)

• W and Higgs particle distributions during electroweak tachyonic preheating
• The approach to thermalization in the classical phi^4 theory in 1+1 dimensions: energy cascades and universal scaling
• The O(N) linear sigma model at finite temperature beyond the Hartree approximation
• Ultraviolet cascade in the thermalization of the classical phi^4 theory in 3+1 dimensions
• Non-equilibrium Goldstone phenomenon in tachyonic preheating
• Mass Renormalization in Lattice Simulations of False Vacuum Decay
• Out-of-equilibrium evolution of quantum fields in the hybrid model with quantum back reaction
• Coupled scalar fields in a flat FRW universe: renormalisation
• Shear viscosity of the ${\Phi }^4$ theory from classical simulation
• Non-equilibrium Higgs transition in classical scalar electrodynamics
• Quantum back-reaction of the superpartners in a large-N supersymmetric hybrid model
• Non-Gaussian Finite Temperature Statistics of the Longitudinal Gauge Excitation of the Higgs Vacuum
• Quasi-Particle Excitations of the Higgs Vacuum at Finite Energy Density