ar X iv : h ep - p h / 01 01 12 2 v 2 2 1 Ja n 20 01

ar X iv : h ep - p h / 01 01 28 0 v 1 2 4 Ja n 20 01 SPIN Progress and Prospects

I review the progress in fundamental spin physics over the past several years and the prospects for the future. The progress is striking and the prospects are excellent.

ar X iv : h ep - t h / 01 12 11 4 v 2 2 1 Ja n 20 02 CCNY - HEP - 01 / 10 Gravitational fields on a noncommutative space

Noncommutative three-dimensional gravity can be described in terms of a noncommuta-tive Chern-Simons theory. We extend this structure and also propose an action for gravi-tational fields on an even dimensional noncommutative space. The action is worked out in some detail for fields on a noncommutative CP 2 and on S 4 .

ar X iv : h ep - p h / 99 05 24 9 v 5 1 2 Ja n 20 01 BI - TP 99 / 12 Two - loop self - energy master integrals on shell

Analytic results for the complete set of two-loop self-energy master integrals on shell with one mass are calculated.

ar X iv : h ep - p h / 01 01 31 2 v 1 2 9 Ja n 20 01 TAUP 2652 - 2000

Theoretical aspects of VMD and related approaches to real photon-hadron interaction are discussed. The work relies on special relativity, properties of linearly polarized photons, angular momentum conservation and relevant experiments. It is explained why VMD and similar approaches should not be regarded as part of a theory but, at most, as phenomenological models. A further experiment pertaini...

ar X iv : h ep - t h / 03 01 12 7 v 1 1 7 Ja n 20 03 Supersymmetry in Spaces of Constant Curvature