Angular-momentum projection in coupled-cluster theory: Structure of 34Mg
Abstract
Single- reference coupled-cluster theory is an accurate and affordable computational method for the nuclear many-body problem. For open-shell nuclei, the reference state typically breaks rotational invariance and angular momentum must be restored as a good quantum number. We perform angular-momentum projection after variation and employ the disentangled coupled-cluster formalism and a Hermitian approach. We compare our results with benchmarks for 8Be and 20Ne using a two-nucleon interaction from chiral effective field theory and for pf-shell nuclei within the traditional shell model. We compute the rotational band in the exotic nucleus 34Mg and find agreement with data.
- Authors:
-
[1];
[1];
;
[1];
[2];
[2];
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. Paris-Saclay, Gif-sur-Yvette (France); Katholieke Univ. Leuven (Belgium)
- Technische Univ. Darmstadt (Germany); Max Planck Inst. fuer Kernphysik, Heidelberg (Germany); GSI-Darmstadt (Germany). ExtreMe Matter Inst. (EMMI)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); German Research Foundation (DFG); European Research Council (ERC)
- OSTI Identifier:
- 1874652
- Grant/Contract Number:
- AC05-00OR22725; FG02-96ER40963; SC0018223; 279384907-SFB-1245; 101020842
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. C
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 6; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Hagen, Gaute, Novario, Samuel J., Sun, Zhonghao, Papenbrock, T., Jansen, G. R., Lietz, J. G., Duguet, T., and Tichai, A. Angular-momentum projection in coupled-cluster theory: Structure of 34Mg. United States: N. p., 2022.
Web. doi:10.1103/physrevc.105.064311.
Hagen, Gaute, Novario, Samuel J., Sun, Zhonghao, Papenbrock, T., Jansen, G. R., Lietz, J. G., Duguet, T., & Tichai, A. Angular-momentum projection in coupled-cluster theory: Structure of 34Mg. United States. https://doi.org/10.1103/physrevc.105.064311
Hagen, Gaute, Novario, Samuel J., Sun, Zhonghao, Papenbrock, T., Jansen, G. R., Lietz, J. G., Duguet, T., and Tichai, A. Thu .
"Angular-momentum projection in coupled-cluster theory: Structure of 34Mg". United States. https://doi.org/10.1103/physrevc.105.064311. https://www.osti.gov/servlets/purl/1874652.
@article{osti_1874652,
title = {Angular-momentum projection in coupled-cluster theory: Structure of 34Mg},
author = {Hagen, Gaute and Novario, Samuel J. and Sun, Zhonghao and Papenbrock, T. and Jansen, G. R. and Lietz, J. G. and Duguet, T. and Tichai, A.},
abstractNote = {Single- reference coupled-cluster theory is an accurate and affordable computational method for the nuclear many-body problem. For open-shell nuclei, the reference state typically breaks rotational invariance and angular momentum must be restored as a good quantum number. We perform angular-momentum projection after variation and employ the disentangled coupled-cluster formalism and a Hermitian approach. We compare our results with benchmarks for 8Be and 20Ne using a two-nucleon interaction from chiral effective field theory and for pf-shell nuclei within the traditional shell model. We compute the rotational band in the exotic nucleus 34Mg and find agreement with data.},
doi = {10.1103/physrevc.105.064311},
journal = {Physical Review. C},
number = 6,
volume = 105,
place = {United States},
year = {Thu Jun 23 00:00:00 EDT 2022},
month = {Thu Jun 23 00:00:00 EDT 2022}
}
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