ar X iv : h ep - t h / 05 05 19 6 v 1 23 M ay 2 00 5 Metastable massive gravitons from an infinite extra dimension ∗ Sanjeev

ar X iv : h ep - t h / 05 05 19 6 v 1 2 3 M ay 2 00 5 Metastable massive gravitons from an infinite extra dimension ∗

Motivated by stringy considerations, Randall & Sundrum have proposed a model where all the fields and particles of physics, save gravity, are confined on a 4-dimensional brane embedded in 5-dimensional anti-deSitter space. Their scenario features a stable bound state of bulk gravity waves and the brane that reproduces standard general relativity. We demonstrate that in addition to this zero-mod...

ar X iv : h ep - e x / 05 05 05 0 v 2 1 9 M ay 2 00 5 CLEO RESULTS ON TRANSITIONS IN HEAVY QUARKONIA a

Recent CLEO results on electromagnetic and hadronic transitions in charmonium and bot-tomonium systems are reviewed.

ar X iv : h ep - p h / 06 05 13 6 v 1 1 1 M ay 2 00 6 Lepton Flavor Violating τ and μ decays

ar X iv : h ep - t h / 06 05 23 5 v 1 2 3 M ay 2 00 6 Drag Force in a Charged N = 4 SYM Plasma

Following recent developments, we employ the AdS/CFT correspondence to determine the drag force exerted on an external quark that moves through an N = 4 super-Yang-Mills plasma with a non-zero R-charge density (or, equivalently, a non-zero chemical potential). We find that the drag force is larger than in the case where the plasma is neutral.

ar X iv : h ep - t h / 05 05 24 1 v 1 2 6 M ay 2 00 5 Gauge fixing and equivariant cohomology

The supersymmetric model developed by Witten [1] to study the equivariant cohomology of a manifold with an isometric circle action is derived from the brst quantization of a simple classical model. The gauge-fixing process is carefully analysed, and demonstrates that different choices of gauge-fixing fermion can lead to different quantum theories.