69 citations · 256 across the 25 of their papers we have counts for
26 papers
Universal reduced order modelling for the nuclear finite amplitude method
Emma Vancayseele, Pepijn Demol, Luis González-Miret Zaragoza +2
The quasiparticle random phase approximation or QRPA has been a foundational many-body technique for decades across quantum chemistry, condensed matter and nuclear physics. Althoug…
Balancing theory uncertainties in ab initio nuclear structure calculations: Many-body truncation versus finite basis size
L. Zurek, U. Vernik, P. Demol +3
First-principles calculations of atomic nuclei are necessarily incomplete as the Schrödinger equation is solved using approximate methods and due to the finite dimension of the emp…
Quantum effects in the quadrupole rotor picture of ultra-relativistic ion-ion collisions
Stavros Bofos, Yi Li, Chenrong Ding +4
The azimuthal hadronic flow observed in ultra-relativistic ion-ion collisions provides a sensitive probe of many-body ground-state correlations in the colliding nuclei. In particul…
Imaging two-body correlations in atomic nuclei via low- and high-energy processes
Stavros Bofos, Benjamin Bally, Thomas Duguet +1
Characterizing the correlated behavior of nucleons inside atomic nuclei constitutes a long-standing challenge, both experimentally and theoretically. It has recently been understoo…
M1 dipole strength from projected generator coordinate method calculations in the sd-shell valence space
Stavros Bofos, Jaime Martínez-Larraz, Benjamin Bally +4
The low-energy enhancement observed in the deexcitation -ray strength functions, attributed to magnetic dipole (M1) radiations, has spurred theoretical efforts to improve on its…
Dimensionality reduction through tensor factorization : application to \textit{ab initio} nuclear physics calculations
Mikael Frosini, Thomas Duguet, Pierre Tamagno +1
The construction of predictive models of atomic nuclei from first principles is a challenging (yet necessary) task towards the systematic generation of theoretical predictions (and…
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…
Ab initio description of monopole resonances in light- and medium-mass nuclei: IV. Angular momentum projection and rotation-vibration coupling
Andrea Porro, Thomas Duguet, Jean-Paul Ebran +3
Giant Resonances are, with nuclear rotations, the most evident expression of collectivity in finite nuclei. These two categories of excitations, however, are traditionally describe…
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…
Tensor factorization in ab initio many-body calculations: Triaxially-deformed (B) MBPT calculations in large bases
M. Frosini, T. Duguet, P. Tamagno
Whether for fundamental studies or nuclear data evaluations, first-principle calculations of atomic nuclei constitute the path forward. Today, performing \textit{ab initio} calcula…
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…
Ab initio description of monopole resonances in light- and medium-mass nuclei: I. Technical aspects and uncertainties of ab initio PGCM calculations
Andrea Porro, Thomas Duguet, Jean-Paul Ebran +3
Giant resonances (GRs) are a striking manifestation of collective motions in mesoscopic systems such as atomic nuclei. Until recently, theoretical investigations have essentially r…
Benchmark of many-body approaches for magnetic dipole transition strength
M. Frosini, W. Ryssens, K. Sieja
The low-energy enhancement observed recently in the deexcitation gamma-ray strength functions, suggested to arise due to the magnetic dipole radiation, motivates theoretical effort…
Rooting the EDF method into the ab initio framework. PGCM-PT formalism based on MR-IMSRG pre-processed Hamiltonians
T. Duguet, J. -P. Ebran, M. Frosini +2
Recently, ab initio techniques have been successfully connected to the traditional valence-space shell model. In doing so, they can either explicitly provide ab initio shell-model…
Zero- and finite-temperature electromagnetic strength distributions in closed- and open-shell nuclei from first principles
Y. Beaujeault-Taudière, M. Frosini, J. -P. Ebran +3
Ab initio approaches to the nuclear many-body problem have seen their reach considerably extended over the past decade. However, collective excitations have been scarcely addressed…
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…
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…