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Physical Review C 85 (2012) 041602
Symmetry breaking and fluctuations within stochastic mean-field dynamics: importance of initial quantum fluctuations
D. Lacroix1, S. Ayik, B. Yilmaz

Dynamics of spontaneous symmetry breaking and fluctuations in the Lipkin-Meshkov-Glick model are investigated in a stochastic mean-field approach. Different from the standard mean-field, in the stochastic approach, initial state fluctuations, are incorporated. In weak coupling, the approach perfectly reproduces the exact quantal dynamics. On the other hand, for increasing coupling strength, above the symmetry breaking threshold, the approach provides description of gross properties (i.e. time averaged behavior) of the exact quantal evolution.
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
Physique/Matière Condensée/Autre

Physique/Physique Nucléaire Expérimentale

Physique/Physique Nucléaire Théorique

Physique/Physique Quantique
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