Quadrupole collectivity in the two-body random ensemble

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.024322· OSTI ID:21596659

Abramkina, Volha; Volya, Alexander ^[1]

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1. Department of Physics, Florida State University, Tallahassee, Florida 32306-4350 (United States)

We conduct a systematic investigation of the nuclear collective dynamics that emerges in systems with two-body random interactions. We explore the development of the mean field and study its geometry. We investigate multipole collectivities in the many-body spectra and their dependence on the underlying two-body interaction Hamiltonian. The quadrupole-quadrupole interaction component appears to be dynamically dominating in the two-body random ensemble. This quadrupole coherence leads to rotational spectral features and thus suggests the formation of the deformed mean-field of a specific geometry.

• OSTI ID: 21596659
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 2; Other Information: DOI: 10.1103/PhysRevC.84.024322; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
HAMILTONIANS
INTERACTIONS
MEAN-FIELD THEORY
QUADRUPOLES
RANDOMNESS
SPECTRA
TWO-BODY PROBLEM
MANY-BODY PROBLEM
MATHEMATICAL OPERATORS
MULTIPOLES
QUANTUM OPERATORS