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arxiv nucl-th/0506066 v1 pith:MVBTIERL submitted 2005-06-22 nucl-th astro-ph

Protoneutron stars within the Brueckner-Bethe-Goldstone theory

classification nucl-th astro-ph
keywords starsbrueckner-bethe-goldstonefinitehyperonsneutrinoprotoneutrontemperaturetrapping
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the structure of newly born neutron stars (protoneutron stars) within the finite temperature Brueckner-Bethe-Goldstone theoretical approach including also hyperons. We find that for purely nucleonic stars both finite temperature and neutrino trapping reduce the value of the maximum mass. For hyperonic stars the effect is reversed, because neutrino trapping shifts the appearance of hyperons to larger baryon density and stiffens considerably the equation of state.

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