Condensed Matter Theories

I. Formal Methods.- Requantization in the Time-Dependent Hartree-Fock Method.- A Reaction Theory and the Relation Between Widths and Energy Shifts.- The Control of Chaos.- Berry Phase and its Unitarily Invariant Generalization.- Natanzon Potentials and Spectrum Generating Algebras.- Ground States of Finite Systems and Information Theory.- Information Theory and Quantum Wave Functions.- Decomposition of Signals and Information Theory.- Finite Temperature Correlated Mean Field Treatments and Information Theory.- Dynamics of Quantum Inhibited Processes Through Repeated Measurements.- II. Classical and Quantum Fluids.- Features of HNC/0 Solutions for Symmetric Films of Liquid 4He at T = 0 K.- Compressible Rayleigh-Benard Convection in a Hard Disks System.- Positron Annihilation as a Probe of Localized States in Fluids.- III. Electronic Systems, Atoms Amd Molecules.- Lower Bound Aspects of Fermion Density Functionals.- Solution of the Ornstein-Zernike Equation for a Mixture of Sticky Hard Spheres and Yukawa Closure.- Dynamical Properties of Strongly Coupled Coulomb Systems.- Z-Dependent Perturbation Theory and Complex Rotation Method in Autoionizing States of Atoms.- Selfconsistent Semiclassical Mean Field.- A Simple Approach to Surface States in Covalent Crystals.- Scattering of Atomic Beams in Semiquantum Gases.- Attempts to Calculate the Structure and Dynamics of Macromolecules.- The N-Representability Problem and the Local-Scaling Version of Density Functional Theory.- Atomic and Ionic Information Entropies.- IV. High-Tc Superconductivity.- Superconductivity in Ba1-x Kx Bi O3 Cubic Oxides.- Non. Conventional Superconductivity in BaPb1-xBixO3 and Ba1-xKxBiO3.- The Essential Singularity in BCS Superconductivity Theory and the Gap-to-Tc Ratio.- Search of Superconductivity in Metal Clusters.- The Role of Spin Occupancy in the Electron Gas Problem.- Local Pair Model for the Analysis of Tunneling and Photoemission Experiments in High Tc Superconductors: Superconducting Phase.- Grand-Canonical Description of the Hubbard Hamiltonian.- V. Stochastic Processes.- Reactant Segregation: The Effect of Strong Space Disorder in Diffusion-Limited Bimolecular Reactions.- Interaction Effects in the Toda Soliton Statistics.- Effects of Nonlinear Surface Diffusion on the Scaling of Rough Surfaces.- VI. Nuclear and Particle Physics.- A Direct Approach to the Tamm-Dancoff Approximation.- Finite Size Effects in the Deconfinement Transition.- The Hyperspherical Harmonic Method Applied to 12C and 16O in the ?-Particle Model.- Atomic Small Clusters and Their Correspondence to Nuclear Physics.- VII. Overwiew Talk.- Some Considerations on the Greenhouse Effect and Related Problems.- Contributors.