ar X iv : h ep - t h / 96 09 17 9 v 1 2 3 Se p 19 96 Quantum Cohomology and all that

ar X iv : h ep - e x / 96 09 00 9 v 1 1 3 Se p 19 96 DESY 96 - 179 DIFFRACTIVE INTERACTIONS

The general framework of diffractive deep inelastic scattering is introduced and reports given in the session on diffractive interactions at the International Workshop on Deep-Inelastic Scattering and Related Phenomena, Rome, April 1996, are presented.

ar X iv : h ep - t h / 96 09 10 9 v 1 1 2 Se p 19 96 RENORMALIZED PATH INTEGRAL IN QUANTUM MECHANICS

We obtain direct, finite, descriptions of a renormalized quantum mechanical system with no reference to ultraviolet cutoffs and running coupling constants, in both the Hamiltonian and path integral pictures. The path integral description requires a modification to the Wiener measure on continuous paths that describes an unusual diffusion process wherein colliding particles occasionally stick to...

ar X iv : h ep - t h / 96 09 15 0 v 1 1 8 Se p 19 96 Vector Positronium States in QED 3

The homogeneous Bethe-Salpeter equation is solved in the quenched ladder approximation for the vector positronium states of 4-component quantum electrodynamics in 2 space and 1 time dimensions. Fermion propagator input is from a Rainbow approximation Dyson-Schwinger solution, with a broad range of fermion masses considered. This work is an extension of earlier work on the scalar spectrum of the...

ar X iv : h ep - t h / 96 01 09 1 v 1 1 8 Ja n 19 96 1 Perturbative Quantum ( In ) equivalence of Dual σ Models in 2 dimensions

Various examples of target space duality transformations are investigated up to two loop order in perturbation theory. Our results show that when using the tree level ('naive') transformation rules the dual theories are in general inequivalent at two loops to the original ones, (both for the Abelian and the non Abelian duality).

ar X iv : h ep - t h / 96 07 09 3 v 1 1 2 Ju l 1 99 6 Quantum dynamics of N = 1 , D = 4 supergravity compensator