TRANSPORT SIMULATIONS WITH PI-IN-MEDIUM-PROPERTIES AND DELTA-IN-MEDIUM-PROPERTIES

Transport simulations including in-medium properties derived in a micr oscopic pi + NN-1 + Delta N-1 model in infinite nuclear matter are pre sented. In-medium pion dispersion relations, partial Delta decay width s, pion absorption cross sections and Delta cross sections are incorpo rated into the transport description by means of a local-density appro ximation. Strong modifications of pi and Delta production and absorpti on rates are found, but only small effects on pion observables. (C) 19 98 Elsevier Science B.V. Ail rights reserved.