Competition between diffusion and rapid expansion and its impact on critical fluctuations in heavy-ion collisions
Abstract
We study the impact of the competition between the expansion of the medium created in heavy-ion collisions and its diffusive properties on the critical fluctuations of the net-baryon density. As the relaxation time of the fluctuations is connected with the diffusive properties, the latter determine the in- or out-of-equilibrium nature of the net-baryon density fluctuations during the fireball evolution. This may result in important consequences for the phenomenological interpretation of heavy-ion collision data. We study three possible situations that can occur as a result of the competition between diffusion and expansion and discuss the impact of this competition on the integrated second and fourth order cumulants of net-baryon density fluctuations at freeze-out in these situations.
Keywords
Cite
@article{arxiv.2111.14466,
title = {Competition between diffusion and rapid expansion and its impact on critical fluctuations in heavy-ion collisions},
author = {Grégoire Pihan and Marcus Bluhm and Masakiyo Kitazawa and Marlene Nahrgang},
journal= {arXiv preprint arXiv:2111.14466},
year = {2021}
}
Comments
Proceedings for the the International conference on Critical Point and Onset of Deconfinement (CPOD 2021), March 15-19, 2021, online