Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-04-08
Phys.Lett. B536 (2002) 185-192
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, 2 figures
Scientific paper
10.1016/S0370-2693(02)01824-5
Towards the end of the brane inflationary epoch in the brane world, cosmic strings (but not texture, domain walls or monopoles) are copiously produced during brane collision. These cosmic strings are D$p$-branes with $(p-1)$ dimensions compactified. We elaborate on this prediction of the superstring theory description of the brane world. Using the data on the temperature anisotropy in the cosmic microwave background, we estimate the cosmic string tension $\mu$ to be around $G \mu \simeq 10^{-7}$. This in turn implies that the anisotropy in the cosmic microwave background comes mostly from inflation, but with a component (of order 10%) from cosmic strings. This cosmic string effect should also be observable in gravitational wave detectors and maybe even pulsar timing measurements. Keywords : Inflation, Brane World, Superstring Theory, Cosmic String, Cosmology
Henry Tye S.-H.
Sarangi Saswat
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