Non-instant collisions and two concepts of quasiparticle

Abstract

The kinetic theory recently implemented in heavy ion reactions combines a non-local and non-instant picture of binary collisions with quasiparticle features. We show that the non-instant description is compatible with the spectral concept of quasiparticles while the commonly used variational concept is consistent only with instant collisions. The rearrangement energy, by which the variational concept surpasses the spectral one, is shown to be covered by a medium effect on non-instant collisions.

PRE 59,1 rap. comm

References in corpus (1)

• Kinetic equation consistent with the equation of state of nuclear matter

Cited by in corpus (13)

• Modelization of the EOS
• Semiclassical transport of particles with dynamical spectral functions
• General response function for interacting quantum liquids
• Mid-rapidity charge distribution in peripheral heavy ion collisions
• Space-time versus particle-hole symmetry in quantum Enskog equations
• Retarded versus time-nonlocal quantum kinetic equations
• Dynamical constraints on phase transitions
• Nonequilibrium thermodynamics with binary quantum correlations
• Anomalous radial expansion in central heavy-ion reactions
• Correlational latent heat by nonlocal quantum kinetic theory
• Fluctuations due to the nonlocal character of collisions
• The concept of correlated density and its application
• Multicomponent Modified Boltzmann Equation and Thermalization