Finite temperature effects on the antikaon optical potential
L. Tolos, A. Polls, A. Ramos
Abstract
By solving the Bethe-Goldstone equation, we have obtained the K optical potential from the KN effective interaction in nuclear matter at T=0. We have extended the model by incorporating finite temperature effects in order to adapt our calculations to the experimental conditions in heavy-ion collisions. In the rank of densities (0-2ρ0), the finite temperature K optical potential shows a smooth behaviour if we compare it to the T=0 outcome. Our model has also been applied to the study of the ratio between K+ and K- produced at GSI with T around 70 MeV. Our results point at the necessity of introducing an attractive K optical potential.
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