The realistic QCD equation of state in relativistic heavy-ion collisions and the early Universe
arXiv:1008.5225 · doi:10.1016/j.nuclphysa.2011.01.024
Abstract
The realistic equation of state of strongly interacting matter, that has been successfully applied in the recent hydrodynamic studies of hadron production in relativistic heavy-ion collisions at RHIC, is used in the Friedmann equation to determine the precise time evolution of thermodynamic parameters in the early Universe. A comparison with the results obtained with simple ideal-gas equations of state is made. The realistic equation of state describes a crossover rather than the first-order phase transition between the quark-gluon plasma and hadronic matter. Our numerical calculations show that small inhomogeneities of strongly interacting matter in the early Universe are moderately damped during such crossover.
References in corpus (7)
- The order of the quantum chromodynamics transition predicted by the standard model of particle physics
- The QCD Equation of State with almost Physical Quark Masses
- Phase transitions in the early and the present Universe
- Resolving the HBT Puzzle in Relativistic Heavy Ion Collision
- Initial condition for hydrodynamics, partonic free streaming, and the uniform description of soft observables at RHIC
- Rapid hydrodynamic expansion in relativistic heavy-ion collisions
- Soft heavy-ion physics from hydrodynamics with statistical hadronization - predictions for the Large Hadron Collider