# Isoscalar monopole resonance of the alpha particle: a prism to nuclear Hamiltonians.

@article{Bacca2013IsoscalarMR, title={Isoscalar monopole resonance of the alpha particle: a prism to nuclear Hamiltonians.}, author={S. Bacca and Nir Barnea and Winfried Leidemann and Giuseppina Orlandini}, journal={Physical review letters}, year={2013}, volume={110 4}, pages={ 042503 } }

We present an ab initio study of the isoscalar monopole excitations of (4)He using different realistic nuclear interactions, including modern effective field theory potentials. In particular we concentrate on the transition form factor F(M) to the narrow 0(+) resonance close to threshold. F(M) exhibits a strong potential model dependence, and can serve as a kind of prism to distinguish among different nuclear force models. Compared to the measurements obtained from inelastic electron scattering…

## 31 Citations

Do light nuclei exhibit 'collective' motions?

- Physics
- 2014

The Lorentz integral transform (LIT) method has allowed to perform ab initio calculations of the response function of 4,6 He, and 6,7 Li to the isoscalar monopole and isovector dipole operators in a…

Transition form factor of the $^4$ He(0+) monopole resonance

- Physics
- 2016

Electron-scattering-experiments offer an insight into nuclear structure and the involved nuclear forces. During the last years, a lot of effort and progress was made by including 3and 4-body terms in…

Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22Mg

- PhysicsPhysics Letters B
- 2018

Abstract Many-body nuclear theory utilizing microscopic or chiral potentials has developed to the point that collectivity might be studied within a microscopic or ab initio framework without the use…

Quantum Monte Carlo calculations of light nuclei using chiral potentials.

- Physics, MedicinePhysical review letters
- 2014

The results confirm the necessity of a three-body force for correct reproduction of experimental binding energies and radii, and pave the way for studying few- and many-nucleon systems using quantum Monte Carlo methods with chiral interactions.

Implementation of Local Chiral Interactions in the Hyperspherical Harmonics Formalism

- PhysicsFrontiers in Physics
- 2021

With the goal of using chiral interactions at various orders to explore the properties of the few-body nuclear systems, we write the recently developed local chiral interactions as spherical…

Relativistic effects in ab-initio electron-nucleus scattering

- Physics
- 2018

The electromagnetic responses obtained from Green's function Monte Carlo (GFMC) calculations are based on realistic treatments of nuclear interactions and currents. The main limitations of this…

Resolution of resonances with the Lorentz integral transform

- Physics
- 2016

The energy resolution of cross sections calculated with the Lorentz integral transform (LIT) method is investigated. It is shown that a crucial role is played by the density of LIT states obtained in…

Removing center of mass effects in response function and sum rule calculations based on the harmonic oscillator basis

- Physics
- 2021

Response functions are at the heart of any comparison of theory with experiment in studies of the nuclear dynamics with electroweak probes. Calculations performed in the laboratory frame often suffer…

The Hyperspherical Harmonics Method: A Tool for Testing and Improving Nuclear Interaction Models

- PhysicsFrontiers in Physics
- 2020

The Hyperspherical Harmonics (HH) method is one of the most accurate techniques to solve the quantum mechanical problem for nuclear systems with a number of nucleons A ≤ 4. In particular, by applying…

Ab initio calculations for non-strange and strange few-baryon systems

- Physics
- 2017

Concerning the non-strange particle systems the low-energy excitation spectra of the three- and four-body helium isotopes are studied. Objects of the study are the astrophysical S-factor S12 of the…