Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10722984 | Physics Letters B | 2011 | 5 Pages |
Abstract
We present the temperature and density dependence of symmetry energy for nuclear matter at finite temperatures based on the thermodynamics approach with the Skyrme energy density functional. We first classify the Skyrme interactions into 7 groups according to their ranges of the variation of neutron and proton effective masses with densities in neutron matter limit (99.99 percent neutron in the matter). We find that there is an obvious correlation between the temperature dependence of the symmetry energy and the splitting of neutron and proton effective mass. For the Skyrme interactions with mnâ>mpâ and the strong neutron and proton effective mass splitting in asymmetric nuclear matter, a transition of symmetry energy from decreasing with temperature at low densities to increasing with temperature at high densities appears. For other Skyrme interactions, we do not observe this phenomenon and the symmetry energy decreases with temperature in the entire density region.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Li Ou, Zhuxia Li, Yingxun Zhang, Min Liu,