Journal article

Publication year: 2000

Pages: 377-400

Journal: Nuclear Physics A: Nuclear and Hadronic Physics

Volume number: 665

Issue number: 3-4

ISSN: 0375-9474

eISSN: 1873-1554

Open access status: Green

DOI Link: https://doi.org/10.1016/S0375-9474(99)00393-0

Publisher: Elsevier

Abstract: 
The conventional transport of particles in the on-shell quasiparticle limit is extended to particles of finite life time by means of a spectral function A(X,P,M-2) for a particle moving in an area of complex self-energy Sigma(X)(ret) = Re Sigma(X)(ret) - i Gamma(x)/2. Starting from the Kadanoff-Baym equations we derive in first-older gradient expansion equations of motion for testparticles with respect to their time evolution in X,P and M-2. The off-shell propagation is demonstrated for a couple of model cases that simulate hadron-nucleus collisions. In case of nucleus-nucleus collisions the imaginary part of the hadron self-energy Gamma(X) is determined by the local space-time dependent collision rate dynamically. A first application is presented for A + A reactions up to 95 A MeV, where the effects from the off-shell propagation of nucleons are discussed with respect to high energy proton spectra, high energy photon production as well as kaon yields in comparison to the available data from GANIL. (C) 2000 Elsevier Science B.V. All rights reserved.

Harvard Citation style: Cassing, W. and Juchem, S. (2000) Semiclassical transport of particles with dynamical spectral functions, Nuclear Physics A: Nuclear and Hadronic Physics, 665(3-4), pp. 377-400. https://doi.org/10.1016/S0375-9474(99)00393-0

APA Citation style: Cassing, W., & Juchem, S. (2000). Semiclassical transport of particles with dynamical spectral functions. Nuclear Physics A: Nuclear and Hadronic Physics. 665(3-4), 377-400. https://doi.org/10.1016/S0375-9474(99)00393-0