183 citations · 1.1k across the 29 of their papers we have counts for
26 papers · 1 filter
Topical issue on the intersection of low-energy nuclear structure and high-energy nuclear collisions
T. Duguet, G. Giacalone, V. Somà +1
High-energy heavy-ion physics and low-energy nuclear structure physics have historically been disconnected fields. The hydrodynamic description of the quark-gluon plasma (QGP) requ…
Deformed natural orbitals for ab initio calculations
Alberto Scalesi, Thomas Duguet, Mikael Frosini +1
The rapid development of ab initio nuclear structure methods towards doubly open-shell nuclei, heavy nuclei and greater accuracy occurs at the price of evermore increased computati…
Impact of correlations on nuclear binding energies
Alberto Scalesi, Thomas Duguet, Pepijn Demol +3
A strong effort will be dedicated in the coming years to extend the reach of ab initio nuclear-structure calculations to heavy doubly open-shell nuclei. In order to do so, the most…
Anisotropic flow in fixed-target Pb+Ne collisions as a probe of quark-gluon plasma
Giuliano Giacalone, Wenbin Zhao, Benjamin Bally +19
The System for Measuring Overlap with Gas (SMOG2) at the LHCb detector enables the study of fixed-target ion-ion collisions at relativistic energies ( GeV…
Ab initio description of monopole resonances in light- and medium-mass nuclei: III. Moments evaluation in ab initio PGCM calculations
Andrea Porro, Thomas Duguet, Jean-Paul Ebran +3
The paper is the third of a series dedicated to the ab initio description of monopole giant resonances in mid-mass closed- and open-shell nuclei via the so-called projected generat…
Ab initio description of monopole resonances in light- and medium-mass nuclei: II. Ab initio PGCM calculations in Ti, Si and Mg
Andrea Porro, Thomas Duguet, Jean-Paul Ebran +3
Giant resonances (GRs) are a striking manifestation of collective motions in atomic nuclei. The present paper is the second in a series of four dedicated to the use of the projecte…
The unexpected uses of a bowling pin: exploiting Ne isotopes for precision characterizations of collectivity in small systems
Giuliano Giacalone, Benjamin Bally, Govert Nijs +16
Whether or not femto-scale droplets of quark-gluon plasma (QGP) are formed in so-called small systems at high-energy colliders is a pressing question in the phenomenology of the st…
On the calculation and use of effective single-particle energies. The example of the neutron - splitting along isotones
Vittorio Somà, Thomas Duguet
The rich phenomenology of quantum many-body systems such as atomic nuclei is complex to interpret. Often, the behaviour (e.g. evolution with the number of constituents) of measurab…
Microscopic optical potentials for medium-mass isotopes derived at the first order of the Watson multiple scattering theory
Matteo Vorabbi, Carlo Barbieri, Vittorio Somà +2
We perform a first-principle calculation of optical potentials for nucleon elastic scattering off medium-mass isotopes. Fully based on a saturating chiral Hamiltonian, the optical…
Gorkov algebraic diagrammatic construction formalism at third order
Carlo Barbieri, Thomas Duguet, Vittorio Somà
Background. The Gorkov approach to self-consistent Green's function theory has been formulated in [V. Somà, T. Duguet, C. Barbieri, Phys. Rev. C 84, 064317 (2011)]. Over the past d…
Multi-reference many-body perturbation theory for nuclei III -- Ab initio calculations at second order in PGCM-PT
Mikael Frosini, Thomas Duguet, Jean-Paul Ebran +6
In spite of missing dynamical correlations, the projected generator coordinate method (PGCM) was recently shown to be a suitable method to tackle the low-lying spectroscopy of comp…
Multi-reference many-body perturbation theory for nuclei II -- Ab initio study of neon isotopes via PGCM and IM-NCSM calculations
Mikael Frosini, Thomas Duguet, Jean-Paul Ebran +5
The neon isotopic chain displays a rich phenomenology, ranging from clustering in the ground-state of the self-conjugate doubly open-shell stable Ne isotope to the physics o…
Multi-reference many-body perturbation theory for nuclei I -- Novel PGCM-PT formalism
Mikael Frosini, Thomas Duguet, Jean-Paul Ebran +1
Perturbative and non-perturbative expansion methods already constitute a tool of choice to perform ab initio calculations over a significant part of the nuclear chart. In this cont…
In-medium -body reduction of -body operators
Mikael Frosini, Thomas Duguet, Benjamin Bally +3
The computational cost of ab initio nuclear structure calculations is rendered particularly acute by the presence of (at least) three-nucleon interactions. This feature becomes esp…
Accessing the shape of atomic nuclei with relativistic collisions of isobars
Giuliano Giacalone, Jiangyong Jia, Vittorio Somà
Nuclides sharing the same mass number (isobars) are observed ubiquitously along the stability line. While having nearly identical radii, stable isobars can differ in shape, and pre…
Moving away from singly-magic nuclei with Gorkov Green's function theory
Vittorio Somà, Carlo Barbieri, Thomas Duguet +1
Ab initio calculations of bulk nuclear properties (ground-state energies, root mean square charge radii and charge density distributions) are presented for seven complete isotopic…
Bogoliubov many-body perturbation theory under constraint
Pepijn Demol, Mikael Frosini, Alexander Tichai +2
In order to solve the A-body Schrödinger equation both accurately and efficiently for open-shell nuclei, a novel many-body method coined as Bogoliubov many-body perturbation theory…
Improved many-body expansions from eigenvector continuation
Pepijn Demol, Thomas Duguet, Andreas Ekström +7
Quantum many-body theory has witnessed tremendous progress in various fields, ranging from atomic and solid-state physics to quantum chemistry and nuclear structure. Due to the inh…
Renormalization of pionless effective field theory in the A-body sector
Mehdi Drissi, Thomas Duguet, Vittorio Soma
Current models of inter-nucleon interactions are built within the frame of Effective Field Theories (EFTs). Contrary to traditional nuclear potentials, EFT interactions require a r…
Novel chiral Hamiltonian and observables in light and medium-mass nuclei
V. Somà, P. Navrátil, F. Raimondi +2
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…
Non-observable nature of the nuclear shell structure. Meaning, illustrations and consequences
T. Duguet, H. Hergert, J. D. Holt +1
The concept of single-nucleon shells constitutes a basic pillar of our understanding of nuclear structure. Effective single-particle energies (ESPEs) introduced by French and Baran…
Leading chiral three-nucleon forces along isotope chains in the calcium region
V. Somà, A. Cipollone, C. Barbieri +2
Three-nucleon forces (3NFs), and in particular terms of the Fujita-Miyazawa type, strongly influence the structure of neutron-rich exotic isotopes. Ab-initio calculations have show…
Ab-initio self-consistent Gorkov-Green's function calculations of semi-magic nuclei - II. Numerical implementation at second order with a two-nucleon interaction
V. Soma, C. Barbieri, T. Duguet
The newly developed Gorkov-Green's function approach represents a promising path to the ab initio description of medium-mass open-shell nuclei. We discuss the implementation of the…
Three-nucleon forces in exotic open-shell isotopes
V. Soma, C. Barbieri, A. Cipollone +2
Advances in the self-consistent Green's function approach to finite nuclei are discussed, including the implementation of three-nucleon forces and the extension to the Gorkov forma…