https://doi.org/10.1140/epja/i2013-13033-8
Regular Article - Theoretical Physics
Investigations of spinodal dynamics in asymmetric nuclear matter within a stochastic relativistic model
19863
Physics Department, Middle East Technical University, 06800, Ankara, Turkey
29863
Physics Department, Tennessee Technological University, 38505, Cookeville, TN, USA
39863
Department of Physics, Bilkent University, 06800, Ankara, Turkey
* e-mail: oyilmaz@metu.edu.tr
** e-mail: ayik@tntech.edu
Received:
25
October
2012
Revised:
18
December
2012
Accepted:
6
February
2013
Published online:
12
March
2013
Early development of spinodal instabilities and density correlation functions in asymmetric nuclear matter are investigated in the stochastic extension of the Walecka-type relativistic mean field including coupling with rho meson. Calculations are performed under typical conditions encountered in heavy-ion collisions and in the crusts of neutron stars. In general, growth of instabilities occur relatively slower for increasing charge asymmetry of matter. At higher densities around ρ = 0.4ρ 0 fluctuations grow relatively faster in the quantal description than those found in the semi-classical limit. Typical sizes of early condensation regions extracted from density correlation functions are consistent with those found from dispersion relations of the unstable collective modes.
© SIF, Springer-Verlag Berlin Heidelberg, 2013