Strength distribution of isoscalar vibrations around thermal equilibrium

Helmut Hofmann, Shuhei Yamaji, Aksel S. Jensen

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We study the collective response as function of excitation for a typical isoscalar mode. We apply a quasi-static picture in which the effective coupling constant changes with temperature T. Around T=2 MeV we find a marked transition in the behaviour of the strength function. Whereas at small T there appear several moderately broad peaks, the strength becomes concentrated in one low frequency mode at large T. The latter is strongly overdamped and its inertia is the one of irrotational flow.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalPhysics Letters B
Issue number1-2
StatePublished - 23 Jul 1992


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