We study a Bose-Einstein condensate of a dilute gas with dipolar interactions, at finite temperature, using the Hartree-Fock-Bogoliubov theory within the Popov approximation. An additional approximation involving the dipolar exchange interaction is made to facilitate the computation. We calculate the temperature dependence of the condensate fraction of a condensate confined in a cylindrically s...

Formic acid decomposes primarily to CO and H2 0 in the gas phase, but to CO, and H, in the aqueous phase. Ab-initio quantum chemical calculations were performed, using Hartree-Fock and density functional methods, to seek an explanation for this behavior. The effect of water on the two decomposition pathways and on the isomerization of formic acid was determined. The transition state structures ...

Within the framework of selfconsistent cranked Hartree-Fock-Bogoli-ubov theory(one-dimensional) we predict second backbend in the yrast line of 182 Os at I ≈ 40¯ h, which is even sharper than the first one observed experimentally at I ≈ 14¯ h. Around such a high spin the structure becomes multi-quasiparticle type, but the main source of this strong discontinuity is a sudden large alignment of i...

We studied the linear sigma model withO(N) symmetry at nonzero temperature in the framework of the CornwallJackiw-Tomboulis formalism [1, 2]. Extending the set of two-particle irreducible diagrams by adding sunset diagrams to the usual Hartree-Fock contributions, we derived a new approximation scheme which extends the standard Hartree-Fock approximation by the inclusion of nonzero decay widths....

Hartree-Fock-Bogolyubov (HFB) calculations making use of a recently proposed microscopic effective pairing interaction are presented. The interaction was shown to reproduce the pairing properties provided by the realistic AV 18 force very accurately in infinite matter. Although finite-ranged and non-local, it makes 3D HFB calculations in coordinate space tractable. As a first application, basic...

A many-body calculation of Li is presented where the only input is the welltested, finite-range D1S effective interaction of Gogny. Pairing correlations are included in a constrained Hartree-Fock-Bogolyubov calculation, while long-range collective correlations are introduced using a GCM derived calculation. Correlations are found to play an important role in describing Li. A substantive underly...

The first results of a new three-dimensional, finite temperature Skyrme-Hartree-Fock+BCS study of the properties of inhomogeneous nuclear matter at densities and temperatures leading to the transition to uniform nuclear matter are presented. A constraint is placed on the two independent components of the quadrupole moment in order to self-consistently explore the shape phase space of nuclear co...

Accurate assessment of the value of the incompressibility coefficient, K, of symmetric nuclear matter, which is directly related to the curvature of the equation of state (EOS), is needed to extend our knowledge of the EOS in the vicinity of the saturation point. We review the current status of K as determined from experimental data on isoscalar giant monopole and dipole resonances (compression...

We present a fully microscopic study of the O+Pb fusion using the density-constrained time-dependent Hartree-Fock theory. The calculated fusion cross-sections are in good agreement with the experimental data for the entire energy range indicating that the incorporation of dynamical effects is crucial in describing heavy-ion fusion. PACS. 21.60.Jz Nuclear Density Functional Theory and extensions...

The multiconnguration methods are the natural generalization of the well-known Hartree-Fock theory for atoms and molecules. By a varia-tional method, we prove the existence of a minimum of the energy and of innnitely many solutions of the multiconnguration equations, a nite number of them being interpreted as excited states of the molecule. Our results are valid when the total nuclear charge Z ...