Thursday, September 13, 2012

1209.2462 (Jan Steinheimer et al.)

Spinodal amplification of density fluctuations in fluid-dynamical
simulations of relativistic nuclear collisions
   [PDF]

Jan Steinheimer, Jorgen Randrup
Extending a previously developed two-phase equation of state, we simulate head-on relativistic lead-lead collisions with fluid dynamics, augmented with a finite-range term, and study the effects of the phase structure on the evolution of the baryon density. For collision energies that bring the bulk of the system into the mechanically unstable spinodal region of the phase diagram, the density irregularities are being amplified significantly. The resulting density clumping may be exploited as a signal of the phase transition, possibly through an enhanced production of composite particles.
View original: http://arxiv.org/abs/1209.2462

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