Beyond-Mean-Field with an Effective Hamiltonian Mapped from an Energy Density Functional
(2023) 28th International Nuclear Physics Conference, INPC 2022 In Journal of Physics: Conference Series 2586.- Abstract
A method for beyond-mean-field calculations based on an energy density functional is described. The main idea is to map the energy surface for the nuclear quadrupole deformation, obtained from an energy density functional at the mean-field level, into an effective Hamiltonian expressed as a many-body operator. The advantage of this procedure is that one avoids the problems with density dependence which can arise in beyond-mean-field methods. The effective Hamiltonian is then used in a straightforward way in the generator-coordinate-method with the inclusion of projections onto good particle numbers and angular momentum. In the end, both spectra and wave functions are obtained. As an example of the method, calculations for the nucleus... (More)
A method for beyond-mean-field calculations based on an energy density functional is described. The main idea is to map the energy surface for the nuclear quadrupole deformation, obtained from an energy density functional at the mean-field level, into an effective Hamiltonian expressed as a many-body operator. The advantage of this procedure is that one avoids the problems with density dependence which can arise in beyond-mean-field methods. The effective Hamiltonian is then used in a straightforward way in the generator-coordinate-method with the inclusion of projections onto good particle numbers and angular momentum. In the end, both spectra and wave functions are obtained. As an example of the method, calculations for the nucleus 62Zn is performed with three different parametrizations of the Skyrme functional. The results are compared with experiment.
(Less)
- author
- Ljungberg, J. LU ; Boström, J. LU ; Carlsson, B. G. ; Idini, A. LU and Rotureau, J. LU
- organization
- publishing date
- 2023
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Journal of Physics: Conference Series
- series title
- Journal of Physics: Conference Series
- volume
- 2586
- edition
- 1
- conference name
- 28th International Nuclear Physics Conference, INPC 2022
- conference location
- Cape Town, South Africa
- conference dates
- 2022-09-11 - 2022-09-16
- external identifiers
-
- scopus:85174584229
- ISSN
- 1742-6588
- DOI
- 10.1088/1742-6596/2586/1/012081
- language
- English
- LU publication?
- yes
- id
- 2f8f8c16-9bf0-4996-8633-0b96ca84c371
- date added to LUP
- 2024-01-12 09:43:18
- date last changed
- 2024-01-12 09:45:48
@inproceedings{2f8f8c16-9bf0-4996-8633-0b96ca84c371, abstract = {{<p>A method for beyond-mean-field calculations based on an energy density functional is described. The main idea is to map the energy surface for the nuclear quadrupole deformation, obtained from an energy density functional at the mean-field level, into an effective Hamiltonian expressed as a many-body operator. The advantage of this procedure is that one avoids the problems with density dependence which can arise in beyond-mean-field methods. The effective Hamiltonian is then used in a straightforward way in the generator-coordinate-method with the inclusion of projections onto good particle numbers and angular momentum. In the end, both spectra and wave functions are obtained. As an example of the method, calculations for the nucleus <sup>62</sup>Zn is performed with three different parametrizations of the Skyrme functional. The results are compared with experiment.</p>}}, author = {{Ljungberg, J. and Boström, J. and Carlsson, B. G. and Idini, A. and Rotureau, J.}}, booktitle = {{Journal of Physics: Conference Series}}, issn = {{1742-6588}}, language = {{eng}}, series = {{Journal of Physics: Conference Series}}, title = {{Beyond-Mean-Field with an Effective Hamiltonian Mapped from an Energy Density Functional}}, url = {{http://dx.doi.org/10.1088/1742-6596/2586/1/012081}}, doi = {{10.1088/1742-6596/2586/1/012081}}, volume = {{2586}}, year = {{2023}}, }