Stability of the lattice formed in first-order phase transitions to matter containing strangeness in protoneutron stars.

Details Stability of the lattice formed in first-order phase transitions to matter containing strangeness in protoneutron stars. Stability of the lattice formed in first-order phase transitions to matter containing strangeness in protoneutron stars.

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprn17033z&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

A first-order phase transition to matter with macroscopic strangeness content during the deleptonization phase in protoneutron stars (PNS) following core collapse supernovae has been shown to possibly lead to a structured lattice defined by negatively charged strange droplets [1]. The lattice might crystallize for temperatures typically obtained during the PNS evolution, and the melting curve of the lattice for small spherical droplets is presented. The mechanical stability against shear stresses is such that typical convective velocities in PNS's might be able to break the lattice, which would result in an asymmetric neutrino emission pattern due to the predicted increase in the neutrino opacity in the case of coherent scattering off lattice sites [2]. The lattice affects the mechanical evolution of the PNS and therefore has to be taken into account in future hydrodynamics simulations. [1] N.K. Glendenning, Physics Reports 342 (2001) 393-447. [2] S. Reddy, G. Bertsch, M. Prakash, Physics Letters B 475 (2000) 1-8.

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