Ab Initio Optical Potentials and Nucleon Scattering on Medium Mass Nuclei.

@article{Idini2019AbIO,
  title={Ab Initio Optical Potentials and Nucleon Scattering on Medium Mass Nuclei.},
  author={Andrea Idini and Carlo Barbieri and Petr Navr{\'a}til},
  journal={Physical review letters},
  year={2019},
  volume={123 9},
  pages={
          092501
        }
}
We derive ab initio optical potentials from self-consistent Green's function theory and compute the elastic scattering of neutrons off oxygen and calcium isotopes. The comparison with scattering data is satisfactory at low scattering energies. The method is benchmarked against the no-core shell model with continuum calculations, showing that virtual excitations of the target are crucial to predict proper fragmentation and absorption at higher energies. This is a significant step toward deriving… Expand
Proton elastic scattering on calcium isotopes from chiral nuclear optical potentials
We formulate microscopic optical potentials for nucleon-nucleus scattering from chiral two- and three-nucleon forces. The real and imaginary central terms of the optical potentials are obtained fromExpand
Coupled-Cluster Computations of Optical Potential for Medium-Mass Nuclei
Recent progress in the numerical solution of the nuclear many-body problem and in the development of nuclear Hamiltonians rooted in Quantum Chromodynamics, has opened the door to first-principleExpand
Ab initio models of atomic nuclei: challenges and new ideas
This review presents some of the challenges in constructing models of atomic nuclei starting from theoretical descriptions of the strong interaction between nucleons. The focus is on statisticalExpand
Setting nonperturbative uncertainties on finite-temperature properties of neutron matter
We present a comprehensive error band on neutron matter properties at finite temperature (finite-T) including uncertainties on the nuclear interaction, the many-body method convergence, and theExpand
Microscopic calculation of inelastic proton scattering off O18, Be10, Be12, and C16 to study neutron excitation in neutron-rich nuclei
The microscopic coupled-channel calculation of inelastic proton scattering is performed for the study of neutron excitations in $2^+_1$ states of $^{18}$O, $^{10}$Be, $^{12}$Be, and $^{16}$C.Expand
Novel chiral Hamiltonian and observables in light and medium-mass nuclei
A novel parameterisation of a Hamiltonian based on chiral effective field theory is introduced. Specifically, three-nucleon operators at next-to-next-to-leading order are combined with an existingExpand
Analyzing the Nuclear Interaction: Challenges and New Ideas
This review presents some of the challenges in constructing models of atomic nuclei starting from theoretical descriptions of the strong interaction between nucleons. The focus is on statisticalExpand
Implementing Chiral Three-Body Forces in Terms of Medium-Dependent Two-Body Forces
Three-nucleon (3N) forces are an indispensable ingredient for accurate few-body and many-body nuclear structure and reaction theory calculations. While the direct implementation of chiral 3N forcesExpand
Three-nucleon force contribution to the deuteron channel in (d,p) reactions
The contribution of a three-nucleon (3N) force, acting between the neutron and proton in the incoming deuteron with a target nucleon, to the deuteron-target potential in the entrance channel of theExpand
The Unification of Structure and Reaction Frameworks
It has become customary to separate nuclear structure from nuclear reactions in the development of theoretical models, even though both of them arise from the same Hamiltonian. In standard reactionExpand
...
1
2
3
...

References

SHOWING 1-10 OF 50 REFERENCES
Elastic proton scattering of medium mass nuclei from coupled-cluster theory
Using coupled-cluster theory and interactions from chiral effective field theory, we compute overlap functions for transfer and scattering of low-energy protons on the target nucleus 40Ca. Effects ofExpand
Accurate nuclear radii and binding energies from a chiral interaction
With the goal of developing predictive ab initio capability for light and medium-mass nuclei, two-nucleon and three-nucleon forces from chiral effective field theory are optimized simultaneously toExpand
Proton elastic scattering on calcium isotopes from chiral nuclear optical potentials
We formulate microscopic optical potentials for nucleon-nucleus scattering from chiral two- and three-nucleon forces. The real and imaginary central terms of the optical potentials are obtained fromExpand
Nucleon-nucleus optical potential in the particle-hole approach
Feshbach's projection formalism in the particle-hole model space leads to a microscopic description of scattering in terms of the many-body self-energy. To investigate the feasibility of thisExpand
Ab initio folding potentials for nucleon-nucleus scattering based on no-core shell-model one-body densities
Background: Calculating microscopic optical potentials for elastic nucleon-nucleus scattering has already led to large body of work in the past. For folding first-order calculations theExpand
Optical Potentials and Propagators for Elastic and Inelastic Scattering from Many-Body Targets
Abstract The usual textbook one-particle Green's function possesses a self-energy that is known to be an optical potential for elastic scattering. The introduction of an optical potential reduces theExpand
Microscopic optical potentials derived from ab initio translationally invariant nonlocal one-body densities
Background: The nuclear optical potential is a successful tool for the study of nucleon-nucleus elastic scattering and its use has been further extended to inelastic scattering and other nuclearExpand
Radii and Binding Energies in Oxygen Isotopes: A Challenge for Nuclear Forces.
TLDR
It is shown that, in spite of a good reproduction of binding energies, ab initio calculations with conventional nuclear interactions derived within chiral effective field theory fail to provide a realistic description of charge and matter radii. Expand
Ab initio description of the exotic unbound 7He nucleus.
TLDR
A new unified approach to nuclear bound and continuum states is introduced based on the coupling of the no-core shell model, a bound-state technique, with theNo- core shell model combined with the resonating-group method, a nuclear scattering technique, to predict a broad 1/2- resonance above 2 MeV. Expand
Quantum Monte Carlo calculations of neutron-alpha scattering.
TLDR
It is found that a good three-nucleon interaction is crucial to obtain an accurate description of neutron-alpha scattering, and the method allows precise calculations of low-lying resonances and their widths. Expand
...
1
2
3
4
5
...