Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1996-08-30
Phys.Lett. B401 (1997) 213-218
Physics
Nuclear Physics
Nuclear Theory
Four figures available on request
Scientific paper
10.1016/S0370-2693(97)00311-0
The variation of kaon mass in dense, charge-neutral baryonic matter at beta-equilibrium has been investigated. The baryon interaction has been included by means of nonlinear Walecka model, with and without hyperons and the interaction of kaons with the baryons has been incorporated through the Nelson-Kaplan model. A self-consistant, one-loop level calculation has been carried out. We find that at the mean field level, the presence of the hyperons makes the density-dependence of the kaon mass softer. Thus, the kaon condensation threshold is pushed up in the baryon density. The loop diagrams tend to lower the kaon condensation point for lower values of $a_3 m_s$. We also find that the S-wave kaon-nucleon interaction plays the dominant role in determining the on-set of kaon condensation and the contribution of the P-wave interaction is insignificant.
Bhattacharyya Abhijit
Ghosh Sanjay K.
Phatak Shashikant C.
Raha Sibaji
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