A.B. Volkov

Density dependent forces and the nature of the 28Si ground state

Abstract 28 Si ground state is found to be prolate when density dependent forces are used in Hartree-Fock calculations instead of oblate as in the case for non-density dependent forces.

An explanation for forking and backbending in rotational spectra

Abstract It is shown that symmetric deformed nuclei are unstable to asymmetric deformation at sufficiently high angular momentum. Forking and backbending are natural consequences of this instability.

The extension of the variable moment of inertia model to odd-even nuclei☆

Abstract The variable moment of inertia model is shown to be applicable to odd-even nuclei when Coriolis coupling effects are small. Under appropriate circumstances the odd-even moments of inertia should be nearly equal to those of an adjoining even-even nucleus.

The effect of density dependent N-N forces on 1p shell hypernuclei binding energies

Abstract The use of a density dependent NN force reduces the theoretically determined Λ binding energy 1p shell nuclei by approximately 0.2 to 0.4 MeV due to compressibility effects. Different odd state ΛN interactions can change these results.

1p shell hypernuclei deformation and Majorana exchange binding energy effects

Abstract The Λ binding energy is reduced in 1p shell hypernuclei by taking deformation into account. The binding also can be reduced by increasing the Majorana exchange component of the ΛN force but this reduces the deformation effect.

An alternative approximate solution to the time-dependent schrödinger equation☆

Abstract A second-order time-differential equation is proposed for the approximate solution of the time-dependent Schrodinger equation with a limited basis. The resulting nonunitary solutions allow for a flux of probability into the excluded space. Simple examples are used in demonstration.

Saturation mechanisms and alpha particle clustering in light nuclei

Abstract It is demonstrated that the extent of density clustering in light A =4n nuclei, as given by Hartee-Fock calculations, depends rather sensitively upon the saturating mechanism of the interactions being used. The example carried through in detail is that of 20 Ne.

A modified generator coordinate model to study nuclear vibrations and rotations

Abstract A simple microscopic determinantal type basis is used to generate oscillator-like wave functions and associated rotational bands. These wave functions can be used to investigate other phenomena.

A non-linear approximation to the Schrödinger time evolution in a truncated subspace

Abstract Approximations to the Schrodinger time evolution in a highly truncated subspace are studied as an alternative to the time-dependent Hartree-Fock approximation. We derive a differential equation of second order in time, that involves the subspace matrix elements of the square of the Hamiltonian. The equation is completely defined and soluble within an arbitrarily truncated subspace. The solutions are non-unitary and allow for a flux of probability between the subspace and the excluded space. The accuracy of the approximation is studied in a number of examples.

Beyond TDHF : Schrödinger time-evolution in a truncated subspace

We derive non-determinantalapproximations to the Schrodinger time-evolution in a necessarily truncated subspace, that allow for a flux of probability between the subspace and the excluded space.