Medium-modified interaction induced by fluctuations

Statistical averaging of the Boltzmann-Langevin equation is performed. It is shown that at the averaged level the fluctuations induce an additional collision term with a medium-modified transition rate, which can give rise to a critical scattering phenomena in the vicinity of unstable regions. In or...

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Bibliographic Details
Published in:Nuclear physics. A 1995-10, Vol.593 (2), p.233-246
Main Authors: Ivanov, Y.B., Ayik, S.
Format: Article
Language:English
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Summary:Statistical averaging of the Boltzmann-Langevin equation is performed. It is shown that at the averaged level the fluctuations induce an additional collision term with a medium-modified transition rate, which can give rise to a critical scattering phenomena in the vicinity of unstable regions. In order to illustrate the effect of this additional collision term, the single-particle relaxation time in nuclear matter is estimated. It is shown that the fluctuation-induced contribution to the relaxation time is indeed comparable with that of the BUU collision term in the vicinity of spinoidal region.
ISSN:0375-9474
DOI:10.1016/0375-9474(95)00343-Y