5 research outputs found
Large Extra Dimensions and Decaying KK Recurrences
We suggest the possibility that in ADD type brane-world scenarios, the higher
KK excitations of the graviton may decay to lower ones owing to a breakdown of
the conservation of extra dimensional ``momenta'' and study its implications
for astrophysics and cosmology. We give an explicit realization of this idea
with a bulk scalar field , whose nonzero KK modes acquire vacuum
expectation values. This scenario helps to avoid constraints on large extra
dimensions that come from gamma ray flux bounds in the direction of nearby
supernovae as well as those coming from diffuse cosmological gamma ray
background. It also relaxes the very stringent limits on reheat temperature of
the universe in ADD models.Comment: 16 pages, late
The role of animal models in evaluating reasonable safety and efficacy for human trials of cell-based interventions for neurologic conditions
10.1038/jcbfm.2008.98Journal of Cerebral Blood Flow and Metabolism2911-9JCBM
Unintended changes in cognition, mood, and behavior arising from cell-based interventions for neurological conditions: Ethical challenges
10.1080/15265160902788645American Journal of Bioethics9531-3