202 citations · 1.8k across the 28 of their papers we have counts for
24 papers · 1 filter
Towards symmetry-unrestricted Skyrme-HFB in coordinate-space representation: the example of rotational bands of the octupole-deformed nucleus Th
W. Ryssens, M. Bender and. P. -H. Heenen
We report on cranked Skyrme-HFB calculations of rotational bands of the octupole-deformed nucleus Th. A sudden change in configuration is observed, with the shape of the yr…
Numerical accuracy of mean-field calculations in coordinate space
W. Ryssens, P. -H. Heenen, M. Bender
Background: Mean-field methods based on an energy density functional (EDF) are powerful tools used to describe many properties of nuclei in the entirety of the nuclear chart. The a…
Spurious finite-size instabilities in nuclear energy density functionals: spin channel
A. Pastore, D. Tarpanov, D. Davesne +1
It has been recently shown, that some Skyrme functionals can lead to non-converging results in the calculation of some properties of atomic nuclei. A previous study has pointed out…
Ab initio-driven nuclear energy density functional method. A proposal for safe/correlated/improvable parametrizations of the off-diagonal EDF kernels
T. Duguet, M. Bender, J. -P. Ebran +2
This programmatic paper lays down the possibility to reconcile the necessity to resum many-body correlations into the energy kernel with the fact that safe multi-reference energy d…
Beyond mean-field study of elastic and inelastic electron scattering off nuclei
J. M. Yao, M. Bender, P. -H. Heenen
Electron scattering provides a powerful tool to determine charge distributions and transition densities of nuclei. This tool will soon be available for short-lived neutron-rich nuc…
Beyond Mean-Field Calculations for Odd-A Nuclei
B. Bally, B. Avez, M. Bender +1
Beyond mean-field methods are very successful tools for the description of large-amplitude collective motion for even-even atomic nuclei. The state-of-the-art framework of these me…
Spurious finite-size instabilities in nuclear energy density functionals
V. Hellemans, A. Pastore, T. Duguet +5
It is known that some well-established parametrizations of the EDF do not always provide converged results for nuclei and a qualitative link between this finding and the appearance…
Skyrme pseudo-potential-based EDF parametrisation for spuriousity-free MR-EDF calculations
J. Sadoudi, M. Bender, K. Bennaceur +3
First exploratory steps towards a pseudo-potential-based Skyrme energy density functional for spuriousity-free multi-reference calculations are presented. A qualitatively acceptabl…
Systematics of low-lying states of even-even nuclei in the neutron-deficient lead region from a beyond-mean-field calculation
J. M. Yao, M. Bender, P. -H. Heenen
Nuclei located in the neutron-deficient Pb region have a complex structure, rapidly evolving as a function of neutron and proton numbers. The most famous example is Pb wher…
Symmetry restoration for odd-mass nuclei with a Skyrme energy density functional
B. Bally, B. Avez, M. Bender +1
In these proceedings, we report first results for particle-number and angular-momentum projection of self-consistently blocked triaxial one-quasiparticle HFB states for the descrip…
Regularization of Multi-Reference Energy Density Functional Calculations
M. Bender, T. Duguet, P. -H. Heenen +1
We report the first application of a recently proposed regularization procedure for multi-reference energy density functionals, which removes spurious divergent or non-continuous c…
Density functional theory and Kohn-Sham scheme for self-bound systems
J. Messud, M. Bender, E. Suraud
We demonstrate how the separation of the total energy of a self-bound system into a functional of the internal one-body Fermionic density and a function of an arbitrary wave vector…
Configuration mixing within the energy density functional formalism: pathologies and cures
Denis Lacroix, Michael Bender, Thomas Duguet
Configuration mixing calculations performed in terms of the Skyrme/Gogny Energy Density Functional (EDF) rely on extending the Single-Reference energy functional into non-diagonal…
Global study of quadrupole correlation effects
M. Bender, G. F. Bertsch, P. -H. Heenen
We discuss the systematics of ground-state quadrupole correlations of binding energies and mean-square charge radii for all even-even nuclei, from O16 up to the superheavies, for w…
Microscopic models for exotic nuclei
M. Bender, P. -H. Heenen
Starting from successful self-consistent mean-field models, this paper discusses why and how to go beyond the mean field approximation. To include long-range correlations from fluc…
Systematics of quadrupolar correlation energies
M. Bender, G. F. Bertsch, P. -H. Heenen
We calculate correlation energies associated with the quadrupolar shape degrees of freedom with a view to improving the self-consistent mean-field theory of nuclear binding energie…
Configuration mixing of angular momentum projected self-consistent mean-field states for neutron-deficient Pb isotopes
M. Bender, P. Bonche, T. Duguet +1
We study the low-lying collective excitation spectra of the neutron-deficient lead isotopes Pb182-Pb194 by performing a configuration mixing of angular-momentum and particle-number…
Correlation energies by the generator coordinate method: computational aspects for quadrupolar deformations
M. Bender, G. Bertsch, P. -H. Heenen
We investigate truncation schemes to reduce the computational cost of calculating correlations by the generator coordinate method based on mean-field wave functions. As our test nu…
Beyond-mean-field-model analysis of low-spin normal-deformed and superdeformed collective states of S32, Ar36, Ar38 and Ca40
M. Bender, H. Flocard, P. -H. Heenen
We investigate the coexistence of spherical, deformed and superdeformed states at low spin in S32, Ar36, Ar38 and Ca40. The microscopic states are constructed by configuration mixi…
Skyrme mean-field study of rotational bands in transfermium isotopes
M. Bender, P. Bonche, T. Duguet +1
Self-consistent mean field calculations with the SLy4 interaction and a density-dependent pairing force are presented for nuclei in the Nobelium mass region. Predicted quasi-partic…
Shape Coexistence in Pb186: Beyond-mean-field description by configuration mixing of symmetry restored wave functions
T. Duguet, M. Bender, P. Bonche +1
We study shape coexistence in Pb186 using configuration mixing of angular-momentum and particle-number projected self-consistent mean-field states. The same Skyrme interaction SLy6…
Beyond mean-field description of the low-lying spectrum of 16O
M. Bender, P. -H. Heenen
Starting from constrained Skyrme-mean-field calculations, the low-energy excitation spectrum of 16O is calculated by configuration mixing of particle-number and angular-momentum pr…
GCM Analysis of the collective properties of lead isotopes with exact projection on particle numbers
P. -H. Heenen, A. Valor, M. Bender +2
We present a microscopic analysis of the collective behaviour of the lead isotopes in the vicinity of Pb208. In this study, we rely on a coherent approach based on the Generator Co…
Comment on ``Structure of exotic nuclei and superheavy elements in a relativistic shell model''
M. Bender
A recent paper [M. Rashdan, Phys. Rev. C 63, 044303 (2001)] introduces the new parameterization NL-RA1 of the relativistic mean-field model which is claimed to give a better descri…