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10 papers · 2 filters
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…
The complete inverse Kohn-Sham problem: from the density to the energy
A. Liardi, F. Marino, G. Colò +2
A complete solution to the inverse problem of Kohn-Sham (KS) density functional theory is proposed. Our method consists of two steps. First, the effective KS potential is determine…
Sensitivity of quasi-free reactions on details of the bound-state overlap functions
C. A. Bertulani, A. Idini, C. Barbieri
It is often stated that heavy-ion nucleon knockout reactions are mostly sensitive to the tails of the bound-state wavefunctions. In contrast, (p,2p) and (p,pn) reactions are known…
Toward ab initio charge symmetry breaking in nuclear energy density functionals
Tomoya Naito, Gianluca Colò, Haozhao Liang +2
We propose a new approach to determine the strength of the charge symmetry breaking (CSB) term in the framework of nuclear density functional theory. It is shown that once ab initi…
Nambu-Covariant Many-Body Theory II: Self-Consistent Approximations
M. Drissi, A. Rios, C. Barbieri
The theory of Self-Consistent Green's Function (SCGF) is reformulated in an explicit Nambu-covariant fashion for applications to many-body systems at non-zero temperature in symmet…
Nambu-Covariant Many-Body Theory I: Perturbative Approximations
M. Drissi, A. Rios, C. Barbieri
Symmetry-breaking considerations play an important role in allowing reliable and accurate predictions of complex systems in quantum many-body simulations. The general theory of per…
Information content of the parity-violating asymmetry in Pb
Paul-Gerhard Reinhard, Xavier Roca-Maza, Witold Nazarewicz
The parity violating asymmetry in Pb, recently measured by the PREX-2 collaboration, is studied using modern relativistic (covariant) and non-relativistic energy d…
Nuclear energy density functionals grounded in ab initio calculations
F. Marino, C. Barbieri, G. Colò +4
We discuss the construction of a nuclear Energy Density Functional (EDF) from ab initio calculations, and we advocate the need of a methodical approach that is free from ad hoc ass…
Beam-normal single-spin asymmetry in elastic scattering of electrons from a spin-0 nucleus
Oleksandr Koshchii, Mikhail Gorchtein, Xavier Roca-Maza +1
We study the beam-normal single-spin asymmetry (BNSSA) in high-energy elastic electron scattering from several spin-0 nuclei. Existing theoretical approaches work in the plane-wave…
Second and fourth moments of the charge density and neutron-skin thickness of atomic nuclei
Tomoya Naito, Gianluca Colò, Haozhao Liang +1
A method is presented to extract the neutron-skin thickness of atomic nuclei from the second and fourth moments of the electric charge distribution. We show that the value of the p…