Effective field theory in the harmonic oscillator basis
Journal Article
·
· Physical Review C
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
In this paper, we develop interactions from chiral effective field theory (EFT) that are tailored to the harmonic oscillator basis. As a consequence, ultraviolet convergence with respect to the model space is implemented by construction and infrared convergence can be achieved by enlarging the model space for the kinetic energy. In oscillator EFT, matrix elements of EFTs formulated for continuous momenta are evaluated at the discrete momenta that stem from the diagonalization of the kinetic energy in the finite oscillator space. By fitting to realistic phase shifts and deuteron data we construct an effective interaction from chiral EFT at next-to-leading order. Finally, many-body coupled-cluster calculations of nuclei up to 132Sn converge fast for the ground-state energies and radii in feasible model spaces.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- Contributing Organization:
- Univ. of Tennessee, Knoxville, TN (United States)
- Grant/Contract Number:
- AC05-00OR22725; FG02-96ER40963; SC0008499
- OSTI ID:
- 1302893
- Alternate ID(s):
- OSTI ID: 1249723
- Journal Information:
- Physical Review C, Journal Name: Physical Review C Journal Issue: 4 Vol. 93; ISSN 2469-9985
- Publisher:
- APSCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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