The role of trapped neutrino in dense stelllar matter and kaon condensation

We investigate the effect of neutrino trapping on kaon condensation process and Equation of State (EOS) in a newly formed neutron star which is less than several seconds old. Using nonlinear relativistic mean field model, we find that the presence of neutrino shifts the threshold for kaon condensation and muon production to much higher density. We also studied the energy density and pressure of the syst under trapped neutrino condition and found that it stiffens the EOS of the system which may be responsible for the delayed exploision mechanism of supernovae.