ar X iv : h ep - t h / 94 06 19 9 v 1 2 9 Ju

ar X iv : h ep - p h / 94 06 43 3 v 1 3 0 Ju n 19 94 UdeM – GPP – TH – 04

I summarize the prospects for discovering Higgs bosons at future pp and e + e − colliders both in the Standard Model and its Minimal Supersymmetric extension.

ar X iv : m at h / 94 06 22 6 v 1 [ m at h . C A ] 2 9 Ju n 19 94 COMBINATORIAL ORTHOGONAL EXPANSIONS

The linearization coefficients for a set of orthogonal polynomials are given explicitly as a weighted sum of combinatorial objects. Positivity theorems of Askey and Szwarc are corollaries of these expansions.

ar X iv : h ep - p h / 94 07 39 7 v 1 2 9 Ju l 1 99 4 Analysis of the anomalous events e + e − → l + l −

ar X iv : h ep - t h / 94 06 05 8 v 1 9 Ju n 19 94 Maintaining coherence in Quantum Computers

The effect of the inevitable coupling to external degrees of freedom of a quantum computer are examined. It is found that for quantum calculations (in which the maintenance of coherence over a large number of states is important), not only must the coupling be small but the time taken in the quantum calculation must be less than the thermal time scale, ¯ h/k B T. For longer times the condition ...

ar X iv : h ep - t h / 06 06 21 9 v 1 2 2 Ju n 20 06 THE 2 + 2 - SIGNATURE AND THE 1 + 1 - MATRIX - BRANE

We discuss different aspects of the 2 + 2-signature from the point of view of the quatl theory. In particular, we compare two alternative approaches to such a spacetime signature, namely the 1+1-matrix-brane and the 2+2-target spacetime of a string.