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Minimally nonlocal nucleon-nucleon potentials with chiral two-pion exchange including Δ resonances

Journal Article · · Physical Review C, Nuclear Physics
 [1];  [2];  [3];  [4];  [4];  [4]
  1. Old Dominion Univ., Norfolk, VA (United States)
  2. Univ. of Salento, Lecce (Italy); INFN-Leece, Leece (Italy)
  3. Old Dominion Univ., Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  4. Univ. de Granada, Granada (Spain)
In this study, we construct a coordinate-space chiral potential, including Δ-isobar intermediate states in its two-pion-exchange component up to order Q3 (Q denotes generically the low momentum scale). The contact interactions entering at next-to-leading and next-to-next-to-next-to-leading orders (Q2 and Q4, respectively) are rearranged by Fierz transformations to yield terms at most quadratic in the relative momentum operator of the two nucleons. The low-energy constant multiplying these contact interactions are fitted to the 2013 Granada database, consisting of 2309 pp and 2982 np data (including, respectively, 148 and 218 normalizations) in the laboratory-energy range 0–300 MeV. For the total 5291 $pp$ and $np$ data in this range, we obtain a Χ2 /datum of roughly 1.3 for a set of three models characterized by long- and short-range cutoffs, RL and RS respectively, ranging from (RL,RS)=(1.2,0.8) fm down to (0.8,0.6) fm. The long-range (short-range) cutoff regularizes the one- and two-pion exchange (contact) part of the potential.
Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Grant/Contract Number:
AC05-06OR23177
OSTI ID:
1171326
Alternate ID(s):
OSTI ID: 1181373
Report Number(s):
DOE/OR/23177--3257; JLAB-THY--14-1993; arXiv:1412.6446; ArticleNumber: 024003
Journal Information:
Physical Review C, Nuclear Physics, Journal Name: Physical Review C, Nuclear Physics Journal Issue: 2 Vol. 91; ISSN 0556-2813; ISSN PRVCAN
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Few-nucleon and many-nucleon systems with semilocal coordinate-space regularized chiral nucleon-nucleon forces journal July 2018
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Two-nucleon scattering in a modified Weinberg approach with a symmetry-preserving regularization journal September 2016
Semilocal momentum-space regularized chiral two-nucleon potentials up to fifth order journal May 2018
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Uncertainty quantification of effective nuclear interactions journal May 2016
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Local Nucleon-Nucleon and Three-Nucleon Interactions Within Chiral Effective Field Theory journal January 2020
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Uncertainty quantification of effective nuclear interactions preprint January 2016
Nuclear matter properties from local chiral interactions with $Δ$ isobar intermediate states text January 2016
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Scale dependence of deuteron electrodisintegration text January 2017
Quantified Gamow Shell Model interaction for $psd$-shell nuclei text January 2017
Historical perspective and future prospects for nuclear interactions text January 2017
Microscopically-based energy density functionals for nuclei using the density matrix expansion: Full optimization and validation text January 2018
Few- and many-nucleon systems with semilocal coordinate-space regularized chiral nucleon-nucleon forces text January 2018
A new leading contribution to neutrinoless double-beta decay text January 2018
Bayesian optimization in ab initio nuclear physics text January 2019
Local nucleon-nucleon and three-nucleon interactions within chiral effective field theory text January 2020
Equations of state for supernovae and compact stars text January 2017

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