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Physical Review C 70 (2004) 028801
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Nuclear liquid-gas phase transition and supernovae evolution
Jerome Margueron1, Jesus Navarro2, Patrick Blottiau3

It is shown that the large density fluctuations appearing at the onset of the first order nuclear liquid-gas phase transition can play an important role in thesupernovae evolution. Due to these fluctuations, the neutrino gas may betrapped inside a thin layer of matter near the proto-neutron star surface. The resulting increase of pressure may induce strong particle ejection a few hundred milliseconds after the bounce of the collapse, contributing to the revival of the shock wave. The Hartree-Fock+RPA scheme, with a finite-range nucleon-nucleon effective interaction, is employed to estimate the effects of the neutrino trapping due to the strong density fluctuations, and to discuss qualitatively the consequences of the suggested new scenario.
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
2 :  IFIC - Instituto de Fisica Corpuscular
3 :  DPTA - Département de Physique Théorique et Appliquée
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Physique/Physique Nucléaire Théorique

Planète et Univers/Astrophysique
neutrinos – supernovae – phase transition – nuclear matter
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