Moving Five-Branes in Low-Energy Heterotic M-Theory
arXiv:hep-th/0106285 · doi:10.1103/PhysRevD.64.126003
Abstract
We construct cosmological solutions of four-dimensional effective heterotic M-theory with a moving five-brane and evolving dilaton and T modulus. It is shown that the five-brane generates a transition between two asymptotic rolling-radii solutions. Moreover, the five-brane motion always drives the solutions towards strong coupling asymptotically. We present an explicit example of a negative-time branch solution which ends in a brane collision accompanied by a small-instanton transition. The five-dimensional origin of some of our solutions is also discussed.
16 pages, Latex, 3 eps figures
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