Composition and thermodynamics of nuclear matter with light clusters

Details Composition and thermodynamics of nuclear matter with light clusters Composition and thermodynamics of nuclear matter with light clusters

2009-08-17

arxiv.org/abs/0908.2344v2

Phys.Rev.C81:015803,2010

Physics

Nuclear Physics

Nuclear Theory

32 pages, 15 figures, minor corrections, accepted for publication in Physical Review C

Scientific paper

10.1103/PhysRevC.81.015803

We investigate nuclear matter at finite temperature and density, including the formation of light clusters up to the alpha particle The novel feature of this work is to include the formation of clusters as well as their dissolution due to medium effects in a systematic way using two many-body theories: a microscopic quantum statistical (QS) approach and a generalized relativistic mean field (RMF) model. Nucleons and clusters are modified by medium effects. Both approaches reproduce the limiting cases of nuclear statistical equilibrium (NSE) at low densities and cluster-free nuclear matter at high densities. The treatment of the cluster dissociation is based on the Mott effect due to Pauli blocking, implemented in slightly different ways in the QS and the generalized RMF approaches. We compare the numerical results of these models for cluster abundances and thermodynamics in the region of medium excitation energies with temperatures T <= 20 MeV and baryon number densities from zero to a few times saturation density. The effect of cluster formation on the liquid-gas phase transition and on the density dependence of the symmetry energy is studied. Comparison is made with other theoretical approaches, in particular those, which are commonly used in astrophysical calculations. The results are relevant for heavy-ion collisions and astrophysical applications.

Affiliated with

Also associated with

No associations

Rating

Composition and thermodynamics of nuclear matter with light clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Composition and thermodynamics of nuclear matter with light clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition and thermodynamics of nuclear matter with light clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-19560