DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Δ isobars and nuclear saturation

Abstract

In this paper, we construct a nuclear interaction in chiral effective field theory with explicit inclusion of the $$\mathrm{{\Delta}}$$-isobar $$\mathrm{{\Delta}}(1232)$$ degree of freedom at all orders up to next-to-next-to-leading order (NNLO). We use pion-nucleon ($${\pi}N$$) low-energy constants (LECs) from a Roy-Steiner analysis of $${\pi}N$$ scattering data, optimize the LECs in the contact potentials up to NNLO to reproduce low-energy nucleon-nucleon scattering phase shifts, and constrain the three-nucleon interaction at NNLO to reproduce the binding energy and point-proton radius of $$^{4}\mathrm{He}$$. For heavier nuclei we use the coupled-cluster method to compute binding energies, radii, and neutron skins. We find that radii and binding energies are much improved for interactions with explicit inclusion of $$\mathrm{{\Delta}}(1232)$$, while $$\mathrm{{\Delta}}$$-less interactions produce nuclei that are not bound with respect to breakup into $${\alpha}$$ particles. Finally, the saturation of nuclear matter is significantly improved, and its symmetry energy is consistent with empirical estimates.

Authors:
 [1];  [2];  [2];  [2];  [2]
  1. Chalmers Univ. of Technology, Göteborg (Sweden). Dept. of Physics
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Univ. of Tennessee, Knoxville, TN (United States); Chalmers Univ. of Technology, Göteborg (Sweden)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); Swedish Research Council (SRC); European Union (EU)
OSTI Identifier:
1474706
Alternate Identifier(s):
OSTI ID: 1422656
Grant/Contract Number:  
AC05-00OR22725; FG02-96ER40963; SC0008499; SC0018223; 2015-00225; 600398
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; effective field theory; equations of state of nuclear matter; nuclear binding; nuclear charge distribution; nuclear forces; nuclear matter; symmetry energy; baryons

Citation Formats

Ekström, A., Hagen, G., Morris, T. D., Papenbrock, T., and Schwartz, P. D. Δ isobars and nuclear saturation. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.024332.
Ekström, A., Hagen, G., Morris, T. D., Papenbrock, T., & Schwartz, P. D. Δ isobars and nuclear saturation. United States. https://doi.org/10.1103/PhysRevC.97.024332
Ekström, A., Hagen, G., Morris, T. D., Papenbrock, T., and Schwartz, P. D. Mon . "Δ isobars and nuclear saturation". United States. https://doi.org/10.1103/PhysRevC.97.024332. https://www.osti.gov/servlets/purl/1474706.
@article{osti_1474706,
title = {Δ isobars and nuclear saturation},
author = {Ekström, A. and Hagen, G. and Morris, T. D. and Papenbrock, T. and Schwartz, P. D.},
abstractNote = {In this paper, we construct a nuclear interaction in chiral effective field theory with explicit inclusion of the $\mathrm{{\Delta}}$-isobar $\mathrm{{\Delta}}(1232)$ degree of freedom at all orders up to next-to-next-to-leading order (NNLO). We use pion-nucleon (${\pi}N$) low-energy constants (LECs) from a Roy-Steiner analysis of ${\pi}N$ scattering data, optimize the LECs in the contact potentials up to NNLO to reproduce low-energy nucleon-nucleon scattering phase shifts, and constrain the three-nucleon interaction at NNLO to reproduce the binding energy and point-proton radius of $^{4}\mathrm{He}$. For heavier nuclei we use the coupled-cluster method to compute binding energies, radii, and neutron skins. We find that radii and binding energies are much improved for interactions with explicit inclusion of $\mathrm{{\Delta}}(1232)$, while $\mathrm{{\Delta}}$-less interactions produce nuclei that are not bound with respect to breakup into ${\alpha}$ particles. Finally, the saturation of nuclear matter is significantly improved, and its symmetry energy is consistent with empirical estimates.},
doi = {10.1103/PhysRevC.97.024332},
journal = {Physical Review C},
number = 2,
volume = 97,
place = {United States},
year = {Mon Feb 26 00:00:00 EST 2018},
month = {Mon Feb 26 00:00:00 EST 2018}
}

Journal Article:

Citation Metrics:
Cited by: 56 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1 FIG. 1: (Color online) Schematic figure of relevant diagrams that enter in ∆-full χEFT at leading order (LO), next-to-leading order (NLO), and next-to-next-to-leading order (NNLO). The leading πN and πN∆ axial couplings are denoted by gA and hA, respectively. Note that there are no ∆ contributions at LO. At NLO,more » the NN contact interactions also remain unchanged. However, the leading-order NNN interaction, i.e. the well-known Fujita-Miyazawa term [35], appears at this order, see also Ref. [36]. The ∆ contributions to the NNN interaction at NNLO vanish due to the Pauli principle or are suppressed and demoted to a higher chiral order. Besides the subleading πN LECs c1, c2, c3, c4, the NNN diagrams contain two additional LECs; cD and cE.« less

Save / Share:

Works referenced in this record:

Regulator artifacts in uniform matter for chiral interactions
journal, September 2016


Density functionals in the laboratory frame
journal, January 2008


Ab initio no core shell model
journal, March 2013

  • Barrett, Bruce R.; Navrátil, Petr; Vary, James P.
  • Progress in Particle and Nuclear Physics, Vol. 69
  • DOI: 10.1016/j.ppnp.2012.10.003

Improving upon CCSD(T): ΛCCSD(T). I. Potential energy surfaces
journal, January 2008

  • Taube, Andrew G.; Bartlett, Rodney J.
  • The Journal of Chemical Physics, Vol. 128, Issue 4
  • DOI: 10.1063/1.2830236

Nucleon-nucleon interaction in the J -matrix inverse scattering approach and few-nucleon systems
journal, October 2004


Extension of coupled-cluster theory with a noniterative treatment of connected triply excited clusters to three-body Hamiltonians
journal, November 2013


Renormalization of chiral two-pion exchange NN interactions with Δ excitations: Central phases and the deuteron
journal, April 2009


Improved nuclear matter calculations from chiral low-momentum interactions
journal, March 2011


Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order
journal, May 2013


Pion Theory of Three-Body Forces
journal, March 1957

  • Fujita, Jun-ichi; Miyazawa, Hironari
  • Progress of Theoretical Physics, Vol. 17, Issue 3
  • DOI: 10.1143/PTP.17.360

Low-energy chiral two-pion exchange potential with statistical uncertainties
journal, May 2015


Symmetry Parameter Constraints from a Lower Bound on Neutron-matter Energy
journal, October 2017

  • Tews, Ingo; Lattimer, James M.; Ohnishi, Akira
  • The Astrophysical Journal, Vol. 848, Issue 2
  • DOI: 10.3847/1538-4357/aa8db9

Solution of the Center-Of-Mass Problem in Nuclear Structure Calculations
journal, August 2009


Medium-Mass Nuclei with Normal-Ordered Chiral N N + 3 N Interactions
journal, July 2012


Ab initio coupled-cluster approach to nuclear structure with modern nucleon-nucleon interactions
journal, September 2010


Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces
journal, April 2016


Quantum Monte Carlo calculation of the equation of state of neutron matter
journal, May 2009


Light-Nuclei Spectra from Chiral Dynamics
journal, February 2018


Few-nucleon forces from chiral Lagrangians
journal, June 1994


Precision Nucleon-Nucleon Potential at Fifth Order in the Chiral Expansion
journal, September 2015


Saturation with chiral interactions and consequences for finite nuclei
journal, July 2017


Two-nucleon potential from chiral Lagrangians
journal, May 1996


Δ-excitations and the three-nucleon force
journal, June 2008


Many-fermion theory in expS- (or coupled cluster) form
journal, February 1978


Recent developments in no-core shell-model calculations
journal, May 2009

  • Navrátil, Petr; Quaglioni, Sofia; Stetcu, Ionel
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 36, Issue 8
  • DOI: 10.1088/0954-3899/36/8/083101

Local chiral potentials with Δ -intermediate states and the structure of light nuclei
journal, November 2016


Weinberg eigenvalues for chiral nucleon-nucleon interactions
journal, November 2017


Magnus expansion and in-medium similarity renormalization group
journal, September 2015


Accurate charge-dependent nucleon-nucleon potential at fourth order of chiral perturbation theory
journal, October 2003


Q UANTUM M ONTE C ARLO C ALCULATIONS OF L IGHT N UCLEI
journal, December 2001


Peripheral nucleon-nucleon scattering at fifth order of chiral perturbation theory
journal, January 2015


Ab initio path to heavy nuclei
journal, September 2014


Coupled-cluster computations of atomic nuclei
journal, September 2014


Table of experimental nuclear ground state charge radii: An update
journal, January 2013


Coupled-cluster theory in quantum chemistry
journal, February 2007


Peripheral NN-scattering: role of delta-excitation, correlated two-pion and vector meson exchange
journal, July 1998


Nuclear matter properties from local chiral interactions with Δ isobar intermediate states
journal, December 2016


The two-nucleon system at next-to-next-to-next-to-leading order
journal, January 2005


Minimally nonlocal nucleon-nucleon potentials with chiral two-pion exchange including Δ resonances
journal, February 2015


Benchmark test calculation of a four-nucleon bound state
journal, August 2001


Coupled-cluster calculations of nucleonic matter
journal, January 2014


Chiral Three-Nucleon Interactions in Light Nuclei, Neutron- α Scattering, and Neutron Matter
journal, February 2016


Constraints on the symmetry energy and neutron skins from experiments and theory
journal, July 2012


Chiral effective field theory and nuclear forces
journal, June 2011


Renormalization of chiral two-pion exchange NN interactions with Δ excitations: Correlations in the partial-wave expansion
journal, April 2011


Roy–Steiner-equation analysis of pion–nucleon scattering
journal, April 2016


Coupled-cluster theory for three-body Hamiltonians
journal, September 2007


Few-nucleon systems in a translationally invariant harmonic oscillator basis
journal, March 2000


Neutron and weak-charge distributions of the 48Ca nucleus
journal, November 2015

  • Hagen, G.; Ekström, A.; Forssén, C.
  • Nature Physics, Vol. 12, Issue 2
  • DOI: 10.1038/nphys3529

Statistical uncertainties of a chiral interaction at next-to-next-to leading order
journal, February 2015

  • Ekström, A.; Carlsson, B. D.; Wendt, K. A.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 42, Issue 3
  • DOI: 10.1088/0954-3899/42/3/034003

No-core shell model in an effective-field-theory framework
journal, September 2007


Nuclear forces from chiral Lagrangians using the method of unitary transformation II: The two-nucleon system
journal, May 2000


Aspects of chiral pion-nucleon physics
journal, April 1997


Nuclear Binding Near a Quantum Phase Transition
journal, September 2016


Modern theory of nuclear forces
journal, December 2009


Ground-state properties of 4 He and 16 O extrapolated from lattice QCD with pionless EFT
journal, September 2017


Lattice effective field theory for medium-mass nuclei
journal, May 2014


Nucleon-nucleon potential from an effective chiral Lagrangian
journal, March 1994


Heavy baryon chiral perturbation theory with light deltas
journal, October 1998

  • Hemmert, Thomas R.; Holstein, Barry R.; Kambor, Joachim
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 24, Issue 10
  • DOI: 10.1088/0954-3899/24/10/003

The In-Medium Similarity Renormalization Group: A novel ab initio method for nuclei
journal, March 2016


Three-nucleon forces from chiral effective field theory
journal, December 2002


Heavy-particle formalism with Foldy-Wouthuysen representation
journal, April 2011


Electric Dipole Polarizability of Ca 48 and Implications for the Neutron Skin
journal, June 2017


Δ effects in pion-nucleon scattering and the strength of the two-pion-exchange three-nucleon interaction
journal, June 2005


Improved chiral nucleon-nucleon potential up to next-to-next-to-next-to-leading order
journal, May 2015


Structure of Ni 78 from First-Principles Computations
journal, October 2016


The Ame2012 atomic mass evaluation
journal, December 2012


Accurate nuclear radii and binding energies from a chiral interaction
journal, May 2015


Reconciling threshold and subthreshold expansions for pion–nucleon scattering
journal, July 2017


Spherical coupled-cluster theory for open-shell nuclei
journal, August 2013


An overview of coupled cluster theory and its applications in physics
journal, January 1991


Coarse-grained potential analysis of neutron-proton and proton-proton scattering below the pion production threshold
journal, December 2013


Uncertainty Analysis and Order-by-Order Optimization of Chiral Nuclear Interactions
journal, February 2016


Quantifying truncation errors in effective field theory
journal, August 2015


Nuclear forces with Δ excitations up to next-to-next-to-leading order, part I: Peripheral nucleon-nucleon waves
journal, May 2007


The Ame2012 atomic mass evaluation
journal, December 2012


Roy–Steiner-equation analysis of pion–nucleon scattering
journal, January 2017


Reconciling threshold and subthreshold expansions for pion–nucleon scattering
text, January 2017


Coupled-cluster theory for three-body Hamiltonians
text, January 2007


Modern Theory of Nuclear Forces
text, January 2008


Quantum Monte Carlo calculation of the equation of state of neutron matter
text, January 2009


Recent developments in no-core shell-model calculations
text, January 2009


Chiral effective field theory and nuclear forces
text, January 2011


Lattice Effective Field Theory for Medium-Mass Nuclei
text, January 2013


Coupled-cluster computations of atomic nuclei
text, January 2013


Statistical uncertainties of a chiral interaction at next-to-next-to leading order
text, January 2014


Precision nucleon-nucleon potential at fifth order in the chiral expansion
text, January 2014


Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces
text, January 2015


Roy-Steiner-equation analysis of pion-nucleon scattering
text, January 2015


The In-Medium Similarity Renormalization Group: A Novel Ab Initio Method for Nuclei
text, January 2015


Nuclear binding near a quantum phase transition
text, January 2016


Nuclear matter properties from local chiral interactions with $Δ$ isobar intermediate states
text, January 2016


Symmetry Parameter Constraints From A Lower Bound On The Neutron-Matter Energy
text, January 2016


Light-nuclei spectra from chiral dynamics
text, January 2017


Heavy Baryon Chiral Perturbation Theory with Light Deltas
text, January 1997


Benchmark Test Calculation of a Four-Nucleon Bound State
text, January 2001


Three-Nucleon Forces from Chiral Effective Field Theory
text, January 2002


Works referencing / citing this record: