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Quantum and statistical fluctuations in dynamical symmetry breaking

Abstract : Dynamical symmetry breaking in an expanding nuclear system is investigated in a semi-classical and quantum framework by employing a collective transport model which is constructed to mimic the collective behavior of expanding systems. It is shown that the fluctuations in collective coordinates during the expansion are developed mainly by the enhancement of the initial fluctuations by the driving force, and that statistical and quantum fluctuations have similar consequences. It is pointed out that the quantal fluctuations may play an important role in the development of instabilities by reducing the time needed to break the symmetry, and the possible role of quantal fluctuations in spinodal decomposition of nuclei is discussed.
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Contributor : Michel Lion Connect in order to contact the contributor
Submitted on : Wednesday, July 5, 2006 - 11:06:59 AM
Last modification on : Tuesday, May 10, 2022 - 3:44:45 PM

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W. Wen, P. Chau Huu-Tai, D. Lacroix, P. Chomaz, S. Ayik. Quantum and statistical fluctuations in dynamical symmetry breaking. Nuclear Physics A, Elsevier, 1998, 637, pp.15-27. ⟨10.1016/S0375-9474(98)00225-5⟩. ⟨in2p3-00083989⟩

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