Effective Kaon Mass in Baryonic Matter and Kaon Condensation

Details Effective Kaon Mass in Baryonic Matter and Kaon Condensation Effective Kaon Mass in Baryonic Matter and Kaon Condensation

1993-05-13

arxiv.org/abs/nucl-th/9305008v1

Phys.Lett. B315 (1993) 17-23

Physics

Nuclear Physics

Nuclear Theory

12pages, USC(NT)-95-5

Scientific paper

10.1016/0370-2693(93)90151-7

The effective kaon mass in dense baryonic matter is calculated based on PCAC, current algebra and the Weinberg smoothness hypothesis. The off-shell behavior of the K-N scattering amplitudes is treated consistently with PCAC, and the effects of the subthreshold K-N resonances are also included. The effective kaon mass is found to depend crucially on the K-N sigma term. Since the current estimates of K-N Sigma term are very uncertain, we discuss various scenarios treating K-N Sigma term as an input parameter; for certain values of K-N Sigma a collective mode of a hyperon-particle-nucleon-hole state appears at high densities, possibly leading to kaon condensation.

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