EPJ Web of Conferences
Volume 95, 20153rd International Conference on New Frontiers in Physics
|Number of page(s)||9|
|Published online||29 May 2015|
Effective equation of state of hot and dense matter in nuclear collisions around FAIR energy
1 Department of Physics, University of Oslo, PB 1048 Blindern, Oslo, Norway
2 Skobeltsyn Institute of Nuclear Physics, Moscow State University, RU-119991 Moscow, Russia
a e-mail: email@example.com
Published online: 29 May 2015
The chemical and thermal equilibration in the central zone of heavy-ion collisions at energies around FAIR is studied within two microscopic models. Two systems are utilized for the analysis: (i) central cubic cell of fixed volume V = 125 fm3 and (ii) expanding central area of uniformly distributed energy density. It is found that kinetic, thermal, and chemical equilibration of the expanding hadronic matter are nearly approached in both systems for the period of 10–18 fm/c. The expansion proceeds almost isentropically. The extracted equation of state (EOS) in P − ɛ plane has a linear dependence P = aɛ, where a ≡ c2s slightly increases with the collision energy from 0.12 to 0.145. Linear dependencies for the EOS are found also in T − μB and T − μS planes. The characteristic kinks observed in the last two phase diagrams are linked to inelastic freeze-out in the expanding fireball.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.