Eur. Phys. J. A (2010) 45: 69-79
https://doi.org/10.1140/epja/i2010-10983-1

Regular Article - Theoretical Physics

A relativistic approach to the equation of state of asymmetric nuclear matter

¹ Department of Physics, Bu-Ali Sina University, Hamedan, Iran
² Department of Physics, University of Tehran, P.O. Box 14395-547, 14399, Tehran, Iran

^* e-mail: zaryouni@basu.ac.ir

Received: 30 January 2010
Revised: 15 April 2010
Accepted: 4 May 2010
Published online: 5 June 2010

Abstract

The properties of asymmetric nuclear matter for a wide range of densities and asymmetric parameters are investigated within the lowest-order-constrained variational (LOCV) method by employing the relativistic Hamiltonian with a potential which has been fitted relativistically to N-N phase shifts ( and to the AV₁₄interaction. Like our previous work on symmetric nuclear matter, the boost interaction corrections as well as the relativistic one-body and two-body kinetic corrections are calculated. The various properties of asymmetric nuclear matter such as the symmetry energy, the saturation energy and the validity of the law, etc., are examined. The symmetry energy is reduced by about 7MeV when we use instead of its non-relativistic version, i.e. the AV₁₄interaction. The results are compared with other many-body calculations.