Formation of quark phases in protoneutron stars: the transition from the 2SC to the normal quark phase

Details Formation of quark phases in protoneutron stars: the transition from the 2SC to the normal quark phase Formation of quark phases in protoneutron stars: the transition from the 2SC to the normal quark phase

2010-12-14

arxiv.org/abs/1012.3046v1

Phys.Rev.D83:125013,2011

Physics

Nuclear Physics

Nuclear Theory

9 pages, 9 figures

Scientific paper

10.1103/PhysRevD.83.125013

We study the process of formation of quark phases in protoneutron stars. After calculating the phase transition between nucleonic matter and the 2SC phase at fixed entropy and lepton fraction, we show that an unpairing transition between the 2SC phase and the normal quark phase occurs for low lepton fractions. We then calculate the process of diffusion of neutrinos in protoneutron stars and show that for intermediate values of the mass of the star, the deleptonization triggers the phase transition between the two quark phases after a temporal delay of a few seconds. In less massive stars instead only the normal quark phase is formed at the end of the deleptonization stage. We also discuss the possible astrophysical implications of our scenario.

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