High-momentum components in the nuclear symmetry energy
Departament d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos, Universitat de Barcelona - Avda. Diagonal 647, E-08028 Barcelona, Spain, EU
2 Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey Guildford, Surrey GU2 7XH, UK, EU
Accepted: 5 December 2011
The short-range and tensor correlations associated to realistic nucleon-nucleon interactions induce a population of high-momentum components in the many-body nuclear wave function. We study the impact of such high-momentum components on bulk observables associated to isospin asymmetric matter. The kinetic part of the symmetry energy is strongly reduced by correlations when compared to the non-interacting case. The origin of this behaviour is elucidated using realistic interactions with different short-range and tensor structures.
PACS: 21.65.Ef – Symmetry energy / 26.60.-c – Nuclear matter aspects of neutron stars
© EPLA, 2012