ar X iv : h ep - p h / 99 01 40 8 v 1 2 6 Ja n 19 99 HZPP - 9901 Jan . 25 , 1999 On the Intermittency and Chaos in High Energy Collisions 1

ar X iv : h ep - t h / 99 01 13 9 v 1 2 7 Ja n 19 99 hep - th / 9901139 SU - ITP - 9901 January 1999 Conformal Mechanics and the Virasoro Algebra

We demonstrate that any scale-invariant mechanics of one variable exhibits not only 0+1 conformal symmetry, but also the symmetries of a full Virasoro algebra. We discuss the implications for the adS/CFT correspondence.

ar X iv : h ep - p h / 99 01 43 4 v 1 2 8 Ja n 19 99 Inhomogeneity and the Post - Inflationary Universe Richard Easther and Matthew Parry

We discuss the interaction between perturbations in the inflaton and the background during the preheating phase in simple inflationary models. By numerically solving the Einstein field equations we are able to assess the impact of non-linear gravitational effects on preheating, and to assess the accuracy of perturbative discussions of the preheating epoch.

ar X iv : h ep - p h / 99 11 40 8 v 1 19 N ov 1 99 9 Quark Matter 99 Summary : Hadronic Signals

ar X iv : h ep - p h / 99 01 28 3 v 1 1 2 Ja n 19 99 TPR - 99 - 02 Diffractive charged meson pair production

We investigate the possibility to measure the nonforward gluon distribution function by means of diffractively produced π+π− and K+K− pairs in polarized lepton nucleon scattering. The resulting cross sections are sizable and are dominated by the gluonic contribution. We find large spin asymmetries, both for π+π− and for K+K− pairs. PACS. 12.38.-t, 13.60.-r, 13.60.Le

ar X iv : h ep - p h / 99 01 33 4 v 1 1 8 Ja n 19 99 Hunting the Vector Hybrid

The current state of analysis of e+e− annihilation below 2.0 GeV and of the vector component of τ -decay is reviewed. The evidence for and against the presence of hybrid vectors is discussed. It is concluded that the data strongly favour their inclusion, and the consequences of this are outlined.