Warm unstable asymmetric nuclear matter: Critical properties and the density dependence of the symmetry energy

N. Alam, H. Pais, C. Providência, and B. K. Agrawal
Phys. Rev. C 95, 055808 – Published 23 May 2017

Abstract

The spinodal instabilities in hot asymmetric nuclear matter and some important critical parameters derived thereof are studied by using six different families of relativistic mean-field models. The slopes of the symmetry energy coefficient vary over a wide range within each family. The critical densities and proton fractions are more sensitive to the symmetry energy slope parameter at temperatures much below its critical value (Tc1416MeV). The spread in the critical proton fraction at a given symmetry energy slope parameter is noticeably larger near Tc, indicating that the equation of state of warm asymmetric nuclear matter at subsaturation densities is not sufficiently constrained. The distillation effects are sensitive to the density dependence of the symmetry energy at low temperatures which tend to wash out with increasing temperature.

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  • Received 10 March 2017

DOI:https://doi.org/10.1103/PhysRevC.95.055808

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

N. Alam1,*, H. Pais2, C. Providência2, and B. K. Agrawal1

  • 1Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata 700064, India
  • 2Department of Physics, CFisUC, University of Coimbra, 3004-516 Coimbra, Portugal

  • *naosad.alam@saha.ac.in

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Vol. 95, Iss. 5 — May 2017

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