Starting from full quantum field theory, various mean field approaches are derived systematically. With a full consideration of external source dependence , the stationary phase approximation of an action gives a nuclear mean field theory which includes quantum correlation effects (such as particle-hole or ladder diagram) in a simpler way than the Brueckner-Hartree-Fock approach. Implementing f...

In this talk, we introduce a new work on the flavor asymmetry of the nucleon sea as arising from the pure statistical effect without any parameter. It will be shown that we can reproduce the flavor asymmetry d̄− ū ≈ 0.123, which is in surprisingly agreement with the experimental observation, by just using the principle of detailed balance. We take the proton as an ensemble of a complete set of q...

The Hartree-Fock approximation is of central importance to quantum chemistry. The assumption of electrons interacting with each other through a mean field sim;>lifiesthe electronic structure problem considerably, and provides the starting point for almost all approaches. However,it is curious to note that even this simplifying assumption was not sufficient to make electronic structue calculatio...

Methods: Following upon the work presented in Ref. [1], quadrupole-constrained Hartree-Fock calculations are used to create a potential energy surface. An isomeric state and a state beyond the second barrier peak are excited by means of instantaneous as well as temporally extended gauge boosts with quadrupole shapes. The subsequent deexcitation is studied in a time-dependent Hartree-Fock simula...

a revised analysis of the effect of long-range nonspherical terms in the intermolecular potential on the second virial coefficient is presented with a preferred hartree-fock-dispersion functional (hfd-c) spherical core treatment of the integrations for small intermolecular distances. a set of modified numerical tables for the accurate calculation of the nonspherical contribution to the second v...

This paper is devoted to the Hartree-Fock model with temperature in the euclidean space. For large classes of free energy functionals, minimizers are obtained as long as the total charge of the system does not exceed a threshold which depends on the temperature. The usual Hartree-Fock model is recovered in the zero temperature limit. An orbital stability result for the Cauchy problem is deduced...

EJectron density distriiutions, derived from ap initio molecular wavefunttions, have been calculated for CNand SCNions. From these dynamic densities were calculated assuming-rigid body thermal. vibrations of the molecules. Comparison with the difference density in NaCN + 2&O, NaSCN and N&SCW, observed by X-ray diffraction, is fair. Remaining differences between theory and experiment are discuss...

To the memory of my first teacher Isaak Yakovlevich Pomeranchuk. Abstract The main features of QCD, e.g. confinement, chiral symmetry breaking, Regge trajectories are naturally and economically explained in the framework of the Field Correlator Method (FCM). The same method correctly predicts the spectrum of hybrids and glueballs. When applied to DIS and high-energy scattering it leads to the i...

Ground-state deformations, binding energies, and potential energy surfaces have been calculated for eveneven dysprosium isotopes between 160Dy and 180Dy in the framework of density-dependent Hartree-Fock calculations with BCS pairing correlations. Further deformed Hartree-Fock with angular-momentum projection and band-mixing calculations explore the yrast spectra of the nuclides approaching the...

Closed-form expressions for the first three terms in the perturbation expansion of the exact energy and Hartree-Fock energy of the lowest singlet and triplet states of the Hooke's law atom are found. These yield elementary formulas for the exact correlation energies (-49.7028 and -5.807 65 mE(h)) of the two states in the high-density limit and lead to a pair of necessary conditions on the exact...