Cosmological particle creation in the little bang

Abstract

Particle production by expanding in the future light cone scalar quantum field is studied by assuming that the initial state is associated with the quasiequilibrium statistical operator corresponding to fluid dynamics. We calculate particle production from a longitudinally boost-invariant expanding quantum field designed as a simple but reliable model for the central rapidity region of a relativistic collision. Exact diagonalization of the model is performed by introducing a notion of quasiparticles.

arXiv comment17 pages

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Cited by in corpus (4)

• Relativistic quantum fluid with boost invariance
• Nonequilibrium Phenomenology of Identified Particle Spectra in Heavy-Ion Collisions at LHC Energies
• Entropy current in relativistic quantum statistical mechanics
• Scalar field with a time-independent classical source, not trivial after all: from vacuum decay to scattering