Electric dipole (E1) transitions of 3s-3p and 3p-3d, and electric quadrupole (E2) and magnetic dipole (M1) transitions between fine structure levels of 3s3p and 3p in Mg-like tungsten (W) have been studied by multiconfiguration Hartree-Fock (MCHF) method. Multielectron ions of high-Z elements are of interest in atomic structure theory. In this work Breit-Pauli relativistic contributions and cor...

Abstract The microscopic mechanisms of the symmetry energy in nuclear matter are investigated framework relativistic Brueckner-Hartree-Fock (RBHF) model with a high-precision realistic potential, pvCDBonn A. kinetic and potential contributions to decomposed. They explicitly expressed by nucleon self-energies, which obtained through projecting G -matrices from RBHF into terms Lorentz covariants....

The occurrence of superconducting and insulating phases is well-established in twisted graphene bilayers, they have also been reported other arrangements layers. We investigate three such arrangements: untwisted AB bilayer on an hBN substrate, two bilayers with respect to each other, a single ABC stacked trilayer substrate. Narrow bands different topology occur all cases, producing high density...

We present several examples where moments of creators and annihilators on an interacting Fock space may be realized as moments of creators and annihilators on a full Fock module. Motivated by this experience we answer the question, whether such a possibility exists for arbitrary interacting Fock spaces, in the affirmative sense. We treat the problem in full algebraic generality. As a by-product...

We present main points of some of Fock papers in Quantum Theory, which were not properly followed when published. Introduction Fock papers on Quantum Theory have quite different lifes in Physics. Some of them were immediately recognized with Fock name attached to them. Hartree-Fock approach, Fock space and Fock representation are very well known examples. Another ones were not properly used whe...

The impact of Hartree-Fock correlations on the nuclear momentum distribution is studied in a fully relativistic one-boson-exchange model. Hartree-Fock equations are exactly solved to first order in the coupling constants. The renormalization of the Dirac spinors in the medium is shown to affect the momentum distribution, as opposed to what happens in the non-relativistic case. The unitarity of ...