Quark-hadron phase transition with finite-size effects in neutron stars

Yasutake, Nobutoshi*; Benic, S.*; Blaschke, D.*; Maruyama, Toshiki  ; Tatsumi, Toshitaka*

We study quark-hadron phase transition in neutron stars. The finite-size effects of mixed-phase structure should be taken into account in the phase transition of multi-component system. The phase transition strongly depends on the models for quark and hadron matter, surface tension, neutrino fraction, and temperature. We find that with strong surface tension the equation of state (EOS) becomes similar to that of a Maxwell construction, while weak surface tension yields bulk Gibbs condition. We also find that the mass-radius relation obtained by our EOS is consistent to the observation.