Journal article

Publication year: 2000

Pages: 475-500

Journal: Nuclear Physics A: Nuclear and Hadronic Physics

Volume number: 672

Issue number: 1-4

ISSN: 0375-9474

eISSN: 1873-1554

DOI Link: https://doi.org/10.1016/S0375-9474(00)00057-9

Publisher: Elsevier

Abstract: 
Based on a first order gradient expansion a consistent transport equation is derived for a nonrelativistic system beyond the quasiparticle approximation, i.e. for a regime where the dynamically generated width of the states is allowed to be large. An exactly conserved quantity is identified which is interpreted as an effective particle number obtained by coarse graining. Using a test particle ansatz for this conserved quantity allows to rewrite the transport equation into equations of motion for test particles. The two-body collision terms are formulated in terms of the test particles which gain non-trivial renormalization factors due to the coarse graining process. (C) 2000 Elsevier Science B.V. All lights reserved.

Harvard Citation style: Leupold, S. (2000) Towards a test particle description of transport processes for states with continuous mass spectra, Nuclear Physics A: Nuclear and Hadronic Physics, 672(1-4), pp. 475-500. https://doi.org/10.1016/S0375-9474(00)00057-9

APA Citation style: Leupold, S. (2000). Towards a test particle description of transport processes for states with continuous mass spectra. Nuclear Physics A: Nuclear and Hadronic Physics. 672(1-4), 475-500. https://doi.org/10.1016/S0375-9474(00)00057-9