Strangeness-driven phase transition in star matter - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2013

Strangeness-driven phase transition in star matter

Ad.R. Raduta
  • Function : Author
J. Margueron


The phase diagram of a system constituted of neutrons, protons, $\Lambda$-hyperons and electrons is evaluated in the mean-field approximation in the complete three-dimensional space given by the baryon, lepton and strange charge. It is shown that the phase diagram at sub-saturation densities is strongly affected by the electromagnetic interaction, while it is almost independent of the electric charge at supra-saturation density. As a consequence, stellar matter under the condition of strangeness equilibrium is expected to experience a first as well as a second-order strangeness-driven phase transition at high density, while the liquid-gas phase transition is expected to be quenched. An RPA calculation indicates that the presence of this critical point might have sizable implications for the neutrino propagation in core-collapse supernovae.

Dates and versions

in2p3-00776595 , version 1 (15-01-2013)



F. Gulminelli, Ad.R. Raduta, M. Oertel, J. Margueron. Strangeness-driven phase transition in star matter. Physical Review C, 2013, 87, pp.055809. ⟨10.1103/PhysRevC.87.055809⟩. ⟨in2p3-00776595⟩
59 View
0 Download



Gmail Facebook X LinkedIn More