ep - t h / 06 05 08 1 v 1 8 M ay 2 00 6 Bouncing cosmological solutions and their stability

ar X iv : h ep - t h / 06 05 08 1 v 2 1 5 Ju l 2 00 6 Bouncing cosmological solutions and their stability

In the present paper we consider the bouncing braneworld scenario, in which the bulk is given by a five-dimensional charged AdS black hole spacetime with matter field confined in a D 3 brane. Then, we study the stability of solutions with respect to homogeneous and isotropic perturbations. Specifically, the AdS black hole with zero ADM mass and charge, and open horizon is an attractor, while th...

ar X iv : h ep - p h / 06 05 26 3 v 2 3 1 M ay 2 00 6 Baryogenesis by R - parity violating top quark decays and neutron - antineutron oscillations

Generation of the cosmological baryon asymmetry in SUSY based model with broken R-parity and low scale gravity is considered. The model allows for a long-life time or even stable proton and observable neutron-antineutron oscillations.

ar X iv : h ep - t h / 06 05 27 4 v 1 2 8 M ay 2 00 6 hep - th / 0605274 Metric and coupling reversal in string theory

Invariance under reversing the sign of the metric G M N (x) and/or the sign of the string coupling field H Universe K contains only F1 and NS5 of IIB and Heterotic SO(32).

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 - p h / 05 08 14 0 v 8 1 0 M ay 2 00 7 BU - HEPP - 05 - 06 July , 2005 IR - Improved DGLAP Theory †

We show that it is possible to improve the infrared aspects of the standard treatment of the DGLAP evolution theory to take into account a large class of higher order corrections that significantly improve the precision of the theory for any given level of fixed-order calculation of its respective kernels. We illustrate the size of the effects we resum using the moments of the parton distributi...