87 citations · 301 across the 12 of their papers we have counts for
12 papers
Finite-spectrum Lorentz integral transform calculation of the He photoabsorption cross section in the no-core shell model
P. Yin, H. T. Zhao, C. Y. Zhai +11
We develop and validate a finite-spectrum implementation of the Lorentz integral transform (LIT) within the \textit{ab initio} no-core shell model (NCSM) for calculating the photoa…
Extrapolation to infinite model space of no-core shell model calculations using machine learning
Aleksandr Mazur, Roman Sharypov, Andrey Shirokov
An ensemble of neural networks is employed to extrapolate no-core shell model (NCSM) results to infinite model space for light nuclei. We present a review of our neural network ext…
Tetraneutron resonance and its isospin analogues
A. M. Shirokov, A. I. Mazur, I. A. Mazur +1
We discuss isospin analogues of the tetraneutron resonance and their possible manifestations in nuclear structure and reactions.
Direct ab initio calculation of the He nuclear electric dipole polarizability
Peng Yin, Andrey M. Shirokov, Pieter Maris +5
The calculation of nuclear electromagnetic sum rules by directly diagonalizing the nuclear Hamiltonian in a large basis is numerically challenging and has not been performed for $A…
Trineutron resonances in the SS-HORSE-NCSM approach
I. A. Mazur, M. K. Efimenko, A. I. Mazur +4
The SS-HORSE-NCSM method is generalized to the case of democratic decay into an odd number of fragments. This method is applied to the search for resonances in three-neutron system…
Resonances in Exotic He Nucleus within the No-Core Shell Model
I. A. Mazur, A. M. Shirokov, I. J. Shin +4
We present results of calculations of elastic scattering phase shifts and resonances in . The calculations utilize the SS-HORSE method combined with ab…
From bound states to the continuum
Calvin W. Johnson, Kristina D. Launey, Naftali Auerbach +35
This white paper reports on the discussions of the 2018 Facility for Rare Isotope Beams Theory Alliance (FRIB-TA) topical program "From bound states to the continuum: Connecting bo…
Shell Model States in the Continuum
A. M. Shirokov, A. I. Mazur, I. A. Mazur +1
We suggest a method for calculating scattering phase shifts and energies and widths of resonances which utilizes only eigenenergies obtained in variational calculations with oscill…
Prediction for a four-neutron resonance
A. M. Shirokov, G. Papadimitriou, A. I. Mazur +3
We utilize various {\em ab initio} approaches to search for a low-lying resonance in the four-neutron () system using the JISP16 realistic interaction. Our most accurate p…
Novel NN interaction and the spectroscopy of light nuclei
A. M. Shirokov, J. P. Vary, A. I. Mazur +2
Nucleon-nucleon (NN) phase shifts and the spectroscopy of nuclei are successfully described by an inverse scattering potential that is separable with oscillator form fact…
Multi-channel phase-equivalent transformation and supersymmetry
A. M. Shirokov, V. N. Sidorenko
Phase-equivalent transformation of local interaction is generalized to the multi-channel case. Generally, the transformation does not change the number of the bound states in the s…
Isolated States
A. M. Shirokov, Yu. F. Smirnov, S. A. Zaytsev
We show that a quantum system with nonlocal interaction can have bound states of unusual type (isolated states (IS)). IS is a bound state that do not generate a -matrix pole. IS…