Mirage Cosmology on Unstable D3-Brane Universe
classification
✦ hep-th
keywords
cosmologicalunstablebranebulkcomparisoncosmologycoupledd3-brane
read the original abstract
We study the geodesic motion of an unstable brane moving in a higher dimensional bulk spacetime. The tachyon which is coupled to a U(1) gauge field induces a non-trivial cosmological evolution. Interestingly enough, this system exhibits a much smoother initial cosmological singularity in comparison with former works.
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