- th / 0 20 20 53 v 1 1 5 Fe b 20 02 A Relativistic Separable Potential to Describe Pairing in Nuclear Matter

- th / 0 20 20 69 v 1 2 1 Fe b 20 02 From meson - and photon - nucleon scattering to vector mesons in nuclear matter

We present a relativistic and unitary approach to pion-and photon-nucleon scattering taking into account the πN , ρN , ωN , ηN , π∆, KΛ and KΣ channels. Our scheme dynamically generates the sand d-wave nucleon resonances N in terms of quasi-local two-body interaction terms. We obtain a fair description of the experimental data relevant for slow vector-meson propagation in nuclear matter. The s-...

- th / 0 20 20 57 v 1 1 9 Fe b 20 02 The antikaon nuclear potential in hot and dense matter

The antikaon optical potential in hot and dense nuclear matter is studied within the framework of a coupled-channel self-consistent calculation taking, as bare meson-baryon interaction, the meson-exchange potential of the Jülich group. Typical conditions found in heavy-ion collisions at GSI are explored. As in the case of zero temperature, the angular momentum components larger than L = 0 contr...

ar X iv : n uc l - th / 9 81 20 18 v 1 8 D ec 1 99 8 Surface behaviour of the pairing gap in semi - infinite nuclear matter

The S0-pairing gap in semi-infinite nuclear matter is evaluated microscopically using the effective pairing interaction recently found explicitly in the coordinate representation starting from the separable form of the Paris NN -potential. Instead of direct iterative solution of the gap equation, a new method proposed by V. A. Khodel, V. V. Khodel and J. W. Clark was used which simplifies the p...

- th / 0 20 20 56 v 1 1 9 Fe b 20 02 Comment on “ Spectroscopy with Random and Displaced Random Ensemble ”

ar X iv : n uc l - th / 0 20 10 26 v 1 1 1 Ja n 20 02 Fragment Distribution in Coexistence Phase of Supernova Matter

We propose a new nucleosynthesis process in which various nuclei are formed through the liquid-gas phase transition of supernova matter as a preprocess of the standard r-process, and study its possibility of realization qualitatively. In the relativistic mean field and statistical model calculations, we find that this process may take place and help the later r-process to proceed.