skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Generator-coordinate reference states for spectra and 0 ν β β decay in the in-medium similarity renormalization group

Journal Article · · Physical Review C
 [1];  [2];  [2];  [3];  [4]
  1. Univ. of North Carolina, Chapel Hill, NC (United States); Michigan State Univ., East Lansing, MI (United States)
  2. Univ. of North Carolina, Chapel Hill, NC (United States)
  3. Univ. of North Carolina, Chapel Hill, NC (United States); San Diego State Univ., CA (United States)
  4. Michigan State Univ., East Lansing, MI (United States)

We use a reference state based on symmetry-restored states from deformed mean-field or generator-coordinate-method (GCM) calculations in conjunction with the in-medium similarity- renormalization group (IMSRG) to compute spectra and matrix elements for neutrinoless double- beta (0$$v$$ββ) decay. Because the decay involves ground states from two nuclei, we use evolved operators from the IMSRG in one nucleus in a subsequent GCM calculation in the other. We benchmark the resulting IMSRG+GCM method against complete shell-model diagonalization for both the energies of low-lying states in 48Ca and 48Ti and the 0$$v$$ββ matrix element for the decay of 48Ca, all in a single valence shell. Our approach produces better spectra than either the IMSRG with a spherical-mean-field reference or GCM calculations with unevolved operators. For the 0$$v$$ββ matrix element the improvement is slight.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0008641; SC0017887; FG02-97ER41019; SC0004142; SC0015376; AC02-05CH11231
OSTI ID:
1544164
Alternate ID(s):
OSTI ID: 1482422
Journal Information:
Physical Review C, Vol. 98, Issue 5; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

References (49)

Disassembling the nuclear matrix elements of the neutrinoless ββ decay journal March 2009
Ab initio electromagnetic observables with the in-medium similarity renormalization group journal September 2017
Systematic study of nuclear matrix elements in neutrinoless double- β decay with a beyond-mean-field covariant density functional theory journal February 2015
Structure of the Lightest Tin Isotopes journal April 2018
Ab initio no core shell model journal March 2013
Symmetry-guided large-scale shell-model theory journal July 2016
On the exponential solution of differential equations for a linear operator journal November 1954
Double beta decay, Majorana neutrinos, and neutrino mass journal April 2008
Ground and excited states of doubly open-shell nuclei from ab initio valence-space Hamiltonians journal May 2016
In-Medium Similarity Renormalization Group For Nuclei journal June 2011
Medium-Mass Nuclei with Normal-Ordered Chiral N N + 3 N Interactions journal July 2012
Status and future of nuclear matrix elements for neutrinoless double-beta decay: a review journal March 2017
Recent developments in no-core shell-model calculations journal May 2009
Magnus expansion and in-medium similarity renormalization group journal September 2015
Proton-neutron pairing amplitude as a generator coordinate for double- β decay journal September 2014
The Magnus expansion and some of its applications journal January 2009
Coupled-cluster computations of atomic nuclei journal September 2014
Nuclear structure and double beta decay journal November 2012
0 ν β β and 2 ν β β nuclear matrix elements, quasiparticle random-phase approximation, and isospin symmetry restoration journal April 2013
Ab initio multireference in-medium similarity renormalization group calculations of even calcium and nickel isotopes journal October 2014
Nucleus-Dependent Valence-Space Approach to Nuclear Structure journal January 2017
Ab Initio Calculations of Even Oxygen Isotopes with Chiral Two-Plus-Three-Nucleon Interactions journal June 2013
Nuclear matrix elements for 0 ν β β decays with light or heavy Majorana-neutrino exchange journal February 2015
Benchmark calculations for H 3 , He 4 , O 16 , and Ca 40 with ab initio coupled-cluster theory journal October 2007
Relativistic description of nuclear matrix elements in neutrinoless double- β decay journal November 2014
Ab Initio Description of Open-Shell Nuclei: Merging No-Core Shell Model and In-Medium Similarity Renormalization Group journal April 2017
Neutrinoless double- β decay matrix elements in large shell-model spaces with the generator-coordinate method journal November 2017
Shape and Pairing Fluctuation Effects on Neutrinoless Double Beta Decay Nuclear Matrix Elements journal September 2013
Normal order and extended Wick theorem for a multiconfiguration reference wave function journal July 1997
Nuclear Structure from the In-Medium Similarity Renormalization Group journal June 2018
0 ν β β and 2 ν β β nuclear matrix elements in the interacting boson model with isospin restoration journal March 2015
Nonperturbative Shell-Model Interactions from the In-Medium Similarity Renormalization Group journal October 2014
In-medium similarity renormalization group for open-shell nuclei journal June 2012
The In-Medium Similarity Renormalization Group: A novel ab initio method for nuclei journal March 2016
Lattice simulations for few- and many-body systems journal July 2009
Shell model study of the isobaric chains A=50, A=51 and A=52 journal November 2001
Large-scale calculations of the double- β decay of 76 Ge , 130 Te , 136 Xe , and 150 Nd in the deformed self-consistent Skyrme quasiparticle random-phase approximation journal June 2013
Open-shell nuclei and excited states from multireference normal-ordered Hamiltonians journal March 2016
Structure of Ni 78 from First-Principles Computations journal October 2016
0 ν β β -decay nuclear matrix element for light and heavy neutrino mass mechanisms from deformed quasiparticle random-phase approximation calculations for Ge 76 ,   Se 82 ,   Te 130 ,   Xe 136 , and Nd 150 with isospin restoration journal April 2018
Large-Scale Shell-Model Analysis of the Neutrinoless β β Decay of Ca 48 journal March 2016
Nuclear matrix element of neutrinoless double- β decay: Relativity and short-range correlations journal February 2017
An algebraic proof of generalized Wick theorem journal June 2010
Ab initio self-consistent Gorkov-Green's function calculations of semi-magic nuclei: Numerical implementation at second order with a two-nucleon interaction journal February 2014
Quantum Monte Carlo methods for nuclear physics journal September 2015
In-medium similarity renormalization group for closed and open-shell nuclei journal December 2016
Neutron-proton pairing and double- β decay in the interacting boson model journal December 2017
Energy Density Functional Study of Nuclear Matrix Elements for Neutrinoless β β Decay journal December 2010
Shell-model calculation of neutrinoless double- β decay of Ge 76 journal April 2016

Cited By (3)

Effect of residual many-body forces due to evolution in the in-medium similarity renormalization group method journal September 2019
Sub-barrier fusion involving odd mass nuclei: The case of 36S + 50Ti, 51V journal July 2019
Variational approximations to exact solutions in shell-model valence spaces: calcium isotopes in the pf-shell text January 2019

Similar Records

Ab initio benchmarks of neutrinoless double-β decay in light nuclei with a chiral Hamiltonian
Journal Article · Thu Jan 21 00:00:00 EST 2021 · Physical Review. C · OSTI ID:1544164

Coupled-Cluster Calculations of Neutrinoless Double- β Decay in Ca 48
Journal Article · Fri May 07 00:00:00 EDT 2021 · Physical Review Letters · OSTI ID:1544164

First Results from CUORE: A Search for Lepton Number Violation via 0νββ Decay of Te130
Journal Article · Mon Mar 26 00:00:00 EDT 2018 · Physical Review Letters · OSTI ID:1544164