Observable (?) cosmological signatures of superstrings in pre-big bang models of inflation
arXiv:hep-th/0511039 · doi:10.1016/j.physletb.2005.12.001
Abstract
The different couplings of the dilaton to the U(1) gauge field of heterotic and Type I superstrings may leave an imprint on the relics of the very early cosmological evolution. Working in the context of the pre-big bang scenario, we discuss the possibility of discriminating between the two models through cross-correlated observations of cosmic magnetic fields and primordial gravitational-wave backgrounds.
12 pages, latex, 1 figure included using epsfig; added more details on the low energy dynamics of the internal moduli fields, results and conclusions are unchanged; typos corrected and small changes performed to match the final published version, to appear in Phys. Lett. B
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