Few-Body Problems in Physics 98

The sixteenth European Conference on Few Body Problems in Physics has taken place from June 1 to June 6, 1998, in Autrans, a little village in the mountains, close to Grenoble. The Conference follows those organized in Peniscola (1995), Amsterdam (1993), Elba (1991), Uzhgorod (1990). The present one has been organized by a group of physicists working in different fields at the University Joseph Fourier of Grenoble who find in this occasion a good opportunity to join their efforts. The core of the organizing committee was nevertheless located at the Institut des Sciences Nucleaires, whose physicists, especially in the group of theoretical physics, have a long tradition in the domain. The Few Body Conference has a natural tendency to be a theoretical one - the exchange about the methods used in different fields is the common point to most participants. It also has a tendency to be a hadronic physics one - the corresponding physics community, perhaps due to the existence of experimen tal facilities devoted to the study of few body systems, is better organized. In preparing the scientific program, we largely relied on the advices of the Inter national Advisory Committee, while avoiding to follow these trends too closely.

InhaltsangabeResolution methods for few-body problems.- Quantum Monte Carlo Methods in Few-Body Physics.- Recent applications of the stochastic variational method.- Adiabatic hyperspherical expansion and three-body halos.- Correlated hyperspherical harmonic methods and applications.- Low-energy scattering in four nucleon systems. Method of cluster reduction.- An investigation of four body bound states.- Extension of the Faddeev equation to nuclei.- Adiabaticity in Faddeev equations.- Jastrow-correlated configuration-interaction description of light nuclei.- Uniform description of the bound, quasistationary and scattering states in the Coulomb three-body systems using adiabatic hyperspherical basis.- The muonic helium atom in CFHHM.- Mathematical aspects.- The Few-body Coulombian problem.- Structure of T- and S-matrices in unphysical sheets and resonances in three-body systems.- Spectral properties of Faddeev equations in differential form.- Jost function for coupled channels.- About compactness of Faddeev integral equations for three charged particles.- Poles near the thresholds in the coupled ?N - ?N system.- Relativity.- Lorentz covariance of three-dimensional equations.- Null-plane invariance of Hamiltonian null-plane dynamics.- Entanglement of Fock-space expansion and covariance in light-front dynamics.- Ladder Bethe-Salpeter equation on the light-front.- 3D reduction of the three-fermion Bethe-Salpeter equation.- Semileptonic decays of pseudoscalar mesons in the light-front quark model.- A Poincaré covariant current operator for low energy and high energy phenomena.- The nucleon Drell-Hearn-Gerasimov sum rule within a relativistic constituent quark model.- Relativistic corrections to the electric polarizability of the neutron.- Covariant formulation of pion-nucleon scattering.- Few-body dynamics: Atomic and mesoscopic systems.- An exotic three-body system - antiprotonic helium atomcules.- Positrons in atomic physics.- Few body problems in muon catalyzed fusion.- Few nucleon dynamics in a nuclear medium.- Few-electron artificial atoms.- Universal description of the He3 system at low energy.- Three helium atoms and the scaling limit.- Antiproton-hydrogen and antihydrogen-hydrogen annihilation at sub kelvin temperatures.- Collisional survival of antiprotonic atomcules.- The fate of 7Be in the Sun. Triple collisions.- Coulomb corrections to the rate of the astrophysical reaction p + p ? d+e+ + ve.- Novel approach to the three-body Coulomb problem.- Nuclear fusion in dµ3He mesic molecule.- Theoretical studies of low energy positron collisions with hydrogen and helium.- New approach to calculations of (e,2e) reactions with light atoms.- Dynamics in few body Coulomb problems.- Threshold effects and stability limit.- Halo Nuclei.- Double Rydberg atoms.- Few-body approach to diffraction of small helium clusters by nanostructures.- The Borromean halo excitations.- Structure of atomic helium trimers.- A few-body treatment of some low energy atomic collisions involving exotic particles.- Few-body dynamics: Nuclear and particle systems.- Hadronic probes of few-nucleon system.- Searches for the H dibaryon and the pentaquark.- Few body systems and electromagnetic probes.- Deuteron electromagnetic form factors.- The Ay puzzle and the nuclear force.- Measurements of the analyzing power of elastic pd-scattering at 190 MeV.- Proton-deuteron elastic scattering for E < 0.- Nucleon-deuteron scattering with ?-isobar excitation.- On the Sagara discrepancy in the cross section minimum of elastic nucleon-deuteron scattering.- Channel selection in proton-deutron bremsstrahlung at 190 MeV.- Effects of Final State Interaction in the 3He Decay caused by muon capture.- Electron-induced two-proton knock out reaction on 3He.- Measurements of the virtual bremsstrallung in the p+d and p+p system.- Benchmark calculations for the n+t system.- Neutron-3H and proton-3He low energy scattering.- Use of realistic interactions to calculate four-nucleon scattering observables.-