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Título : Pairing and alpha-like quartet condensation in N=Z nuclei
Autor : Sandulescu, N., Dukelsky, Jorge, Negrea, D.
Fecha de publicación : 2011
Editor: Institute of Physics Publishing
Citación : Journal of Physics: Conference Series 321: 012001 (2011)
Resumen: We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable and nonintegrable) models describing a single-mode bosonic field coupled to a collection of atoms. It is shown that the presence of the ESQPT in these models affects the quantum relaxation processes following an abrupt quench in the control parameter. Clear-cut evidence of the ESQPT effects is presented in integrable models, while in a nonintegrable model the evidence is blurred due to chaotic behavior of the system in the region around the critical energy.
Identificadores: doi: 10.1088/1742-6596/321/1/012001
issn: 1742-6588
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