Effects of mode-mode and isospin-isospin correlations on domain formation of disoriented chiral condensates

Abstract

The effects of mode-mode and isospin-isospin correlations on nonequilibrium chiral dynamics are investigated by using the method of the time dependent variational approach with squeezed states as trial states. Our numerical simulations show that large domains of the disoriented chiral condensate (DCC) are formed due to the combined effect of the mode-mode and isospin-isospin correlations. Moreover, it is found that, when the mode-mode correlation is included, the DCC domain formation is accompanied by the amplification of the quantum fluctuation, which implies the squeezing of the state. However, neither the DCC domain formation nor the amplification of the quantum fluctuation is observed if only the isospin-isospin correlation is included. This suggests that the mode-mode coupling plays a key role in the DCC domain formation.

arXiv comment10 pages, 11 figures; Correction of an error in Fig.1

References in corpus (20)

• Dissipation via Particle Production in Scalar Field Theories
• Emergence of Coherent Long Wavelength Oscillations After a Quench: Application to QCD
• Controlled nonperturbative dynamics of quantum fields out of equilibrium
• Non-Equilibrium Quantum Fields in the Large N Expansion
• Far-from-equilibrium dynamics with broken symmetries from the 2PI-1/N expansion
• Non-Equilibrium Evolution of Scalar Fields in FRW Cosmologies I
• Nonequilibrium Quantum Dynamics Of Disoriented Chiral Condensates
• Larger Domains of Disoriented Chiral Condensate Through Annealing
• How Disoriented Chiral Condensates Form: Quenching vs. Annealing
• Quantum dynamics of phase transitions in broken symmetry $\lambda {\varphi }^4$ field theory
• Non-Equilibrium Bose-Einstein Condensates, Dynamical Scaling and Symmetric Evolution in large N Phi^4 theory
• Reheating after Supercooling in the Chiral Phase Transition
• Particle Production and Effective Thermalization in Inhomogeneous Mean Field Theory
• Thermalization in a Hartree Ensemble Approximation to Quantum Field dynamics
• Staying Thermal with Hartree Ensemble Approximations
• Anomaly Induced Domain Formation of Disoriented Chiral Condensates
• Dynamical behavior of spatially inhomogeneous relativistic $\lambda {\varphi }^4$ quantum field theory in the Hartree approximation
• The effect of memory on relaxation in a scalar field theory
• Time-Evolution of a Collective Meson Field by the Use of a Squeezed State
• Nonequilibrium chiral dynamics by the time dependent variational approach with squeezed states