Entropy production in high energy collisions

摘要: The entropy production in high-energy collisions is computed a Monte Carlo cascade model. For of $^{40}\mathrm{Ca}$ on at 800 MeV/nucleon beam energy, the 4.4 per particle, about unit higher than estimated from bulk dynamics. particle correlation function final state also computed, and found to be reasonable accord with thermal distribution same entropy. With such low values, most particles emerge clusters, contrary experiment. Thus calculation supports conclusion Siemens Kapusta, that additional degrees freedom become accessible heavy ion collisions, beyond those conventional nuclear description.