Article
Two-level interacting boson models beyond the mean field
Author/s | Arias Carrasco, José Miguel |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2007-01-26 |
Deposit Date | 2017-07-10 |
Published in |
|
Abstract | The phase diagram of two-level boson Hamiltonians, including the interacting boson model (IBM), is studied beyond the standard mean field approximation using the Holstein-Primakoff mapping. The limitations of the
usual ... The phase diagram of two-level boson Hamiltonians, including the interacting boson model (IBM), is studied beyond the standard mean field approximation using the Holstein-Primakoff mapping. The limitations of the usual intrinsic state (mean field) formalism concerning finite-size effects are pointed out. The analytic results are compared to numerics obtained from exact diagonalizations. Excitation energies and occupation numbers are studied in different model space regions (Casten triangle for IBM) and especially at the critical points. |
Funding agencies | European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Project ID. | BFM2003-05316-C02-02
FIS2005-01105 FPA2003- 05958 |
Citation | Arias Carrasco, J.M. (2007). Two-level interacting boson models beyond the mean field. Physical Review C - Nuclear Physics, 75 (1), 014301-1-014301-10. |
Files | Size | Format | View | Description |
---|---|---|---|---|
Two-level interacting boson ... | 389.8Kb | [PDF] | View/ | |