Competition between diffusion and rapid expansion andits 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.
- Publication:
-
Critical Point and Onset Of Development
- Pub Date:
- September 2022
- DOI:
- 10.22323/1.400.0026
- arXiv:
- arXiv:2111.14466
- Bibcode:
- 2022cpod.confE..26P
- Keywords:
-
- Nuclear Theory;
- High Energy Physics - Phenomenology
- E-Print:
- Proceedings for the the International conference on Critical Point and Onset of Deconfinement (CPOD 2021), March 15-19, 2021, online