Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-01-08
Phys.Rev.C73:045804,2006
Physics
Nuclear Physics
Nuclear Theory
20 pages, 12 figures, revtex4
Scientific paper
10.1103/PhysRevC.73.045804
The complete form of the equation of state of strangeness rich proto-neutron and neutron star matter has been obtained. The currently obtained lower value of the Lambda Lambda potential at the level of 5 MeV permits the existence of additional parameter set which reproduces the weaker Lambda Lambda interaction. The effects of the strength of hyperon-hyperon interactions on the equations of state constructed for the chosen parameter set have been analyzed. It has been shown that replacing the strong Y-Y interaction model by the weak one introduces large differences in the composition of a proto-neutron star matter both in the strange and non-strange sectors. Also concentrations of neutrinos have been significantly altered in proto-neutron star interiors. The performed calculations have indicated that the change of the hyperon-hyperon coupling constants affects the value of the proto-neutron star maximum mass.
Bednarek Ilona
Mańka Ryszard
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