Relativistic Mean Field Models at High Densities
Abstract
The effects of vector-isovector terms predicted by relativistic mean field models based on effective field theory on the equation of state and the neutrino mean free path in neutron stars have been studied. Using a procedure similar to Ref. [1] in treating the isovector sector, a parameter set (G2*) that predicts a much smaller proton fraction than the standard one (G2) can be obtained. We found that the G2* has a softer equation of state compared to the G2 at higher densities and the disappearance of the anomalous behavior of the neutrino mean free path in neutron star does not depend on the proton fraction.
Keywords
Cite
@article{arxiv.nucl-th/0512095,
title = {Relativistic Mean Field Models at High Densities},
author = {A. Sulaksono and P. T. P. Hutauruk and C. K. Williams and T. Mart},
journal= {arXiv preprint arXiv:nucl-th/0512095},
year = {2007}
}
Comments
4 pages, 2 figures, talk given at the Third Asia-Pacific Conference on Few-Body Problems in Physics, Nakhon Ratchasima, Thailand, 26-30 July, 2005