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hep-th2004
Dynamical decompactification from brane gases in eleven-dimensional supergravity
Antonio Campos
Brane gas cosmology provides a dynamical decompactification mechanism that could account for the number of spacetime dimensions we observe today. In this work we discuss this scena…
astro-ph2004
Instant preheating mechanism and UHECR
A. H. Campos, J. M. F. Maia, R. Rosenfeld
Top-down models assume that the still unexplained Ultra High Energy Cosmic Rays (UHECR's) are the decay products of superheavy particles. Such particles may have been produced by o…