Spinodal instabilities in nuclear matter in a stochastic relativistic mean-field approach

Ayik, S.
Yılmaz Tüzün, Özgül
Er, N.
Gokalp, A.
Ring, P.
Spinodal instabilities and early growth of baryon density fluctuations in symmetric nuclear matter are investigated in the basis of the stochastic extension of the relativistic mean-field approach in the semiclassical approximation. Calculations are compared with the results of nonrelativistic calculations based on Skyrme-type effective interactions under similar conditions. A qualitative difference appears in the unstable response of the system: the system exhibits most unstable behavior at higher baryon densities around rho(b) = 0.4 rho(0) in the relativistic approach while most unstable behavior occurs at lower baryon densities around rho(b) = 0.2 rho(0) in the nonrelativistic calculations


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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 rho = 0.4 rho(0) fluctuatio...
Citation Formats
S. Ayik, Ö. Yılmaz Tüzün, N. Er, A. Gokalp, and P. Ring, “Spinodal instabilities in nuclear matter in a stochastic relativistic mean-field approach,” PHYSICAL REVIEW C, pp. 0–0, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62969.