ar X iv : h ep - t h / 96 08 14 2 v 1 2 1 A ug 1 99 6 The Casimir Effect of Curved Space - time ( formal developments )

ar X iv : h ep - t h / 96 08 14 1 v 1 2 1 A ug 1 99 6 Propagators in Curved Space

We demonstrate how to obtain explicitly the propagators for quantum fields residing in curved space-time using the heat kernel for which a new construction procedure exists. Propagators are determined for the case of Rindler, Friedman-Robertson-Walker, Schwarzschild and general conformally flat metrics, both for scalar, Dirac and Yang-Mills fields. The calculations are based on an improved form...

ar X iv : h ep - t h / 96 10 18 5 v 1 2 3 O ct 1 99 6 A Functional Approach to the Heat Kernel in Curved Space

ar X iv : h ep - t h / 04 08 19 3 v 1 2 5 A ug 2 00 4 Snyder noncommutative space - time from two - time physics

We show that the two-time physics model leads to a mechanical system with Dirac brackets consistent with the Snyder noncommutative space. An Euclidean version of this space is also obtained and it is shown that both spaces have a dual system describing a particle in a curved space-time. PACS numbers: 11.10.Nx, 02.40.Gh, 45.20.-d e-mail: [email protected] e-mail: [email protected] 1

ar X iv : h ep - p h / 96 08 32 5 v 1 1 4 A ug 1 99 6 HIGGS MASS PREDICTION

In this talk the Higgs boson effects in electroweak precision observables are reviewed and the possibility of indirect information on the Higgs mass from electroweak radiative corrections and precision data is discussed.

ar X iv : h ep - p h / 96 08 24 9 v 1 7 A ug 1 99 6 Non - factorizable Contribution to B K of Order 〈 G 3 〉

Within the Chiral Quark Model we have calculated the effect of non-factorizable G 3 contribution to the BK parameter. When all diagrams are summed, a vanishing result is obtained.