منابع مشابه
Collective Excitations in Realistic Quantum Wires
We have used the Hartree-Fock Random Phase Approximation (HFRPA) to study the interacting electron gas in a quantum wire. The spectra of intersubband spin-flip excitations reveal a considerable red shift with respect to single-particle HF energies. That signals on appearance of collective intersubband spind-density excitations due to the exchange interaction. The long wavelength dispersions of ...
متن کاملRealistic Effective Interactions and Nuclear Structure Calculations
We address the two main questions relevant to microscopic nuclear structure calculations starting from a free NN potential. These concern the accuracy of these kinds of calculations and the extent to which they depend on the potential used as input. Regarding the first question, we present some results obtained for nuclei around doubly magic Sn and Pb by making use of an effective interaction d...
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The BRST treatment of triaxial systems rotating at high spins is used to solve perturbatively the γ-independent Bohr collective hamiltonian.
متن کاملCollective Modes of Tri-Nuclear Molecules
A geometrical model for tri-nuclear molecules is presented. An analytical solution is obtained provided the nuclei, which are taken to be prolately deformed, are connected in line to each other. Furthermore, the tri-nuclear molecule is composed of two heavy and one light cluster, the later sandwiched between the two heavy clusters. A basis is constructed in which Hamiltonians of more general co...
متن کاملDoes localization occur in collective nuclear motion?
Large-amplitude collective nuclear motion is frequently described by a collective Hamiltonian [1], where the mass parameter is determined within the cranking approximation while the potential energy is defined by the groundstate expectation value of the many-body Hamiltonian as function of the collective variable q. However, due to quasicrossings of levels the mass parameter exhibits large fluc...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 1996
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.54.1641