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Super heavy dark matter anisotropies from D-particles in the early universe
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Super heavy dark matter anisotropies from D-particles in the early universe
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| Mavromatos, N. E.; Papavassiliou, Joannis | |||
| This document is a artículoDate2004 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/43016 |
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| We discuss a way of producing anisotropies in the spectrum of superheavy Dark matter, which are due to the distortion of the inflationary space time induced by the recoil of D-particles upon their scattering with ordinary string matter in the Early Universe. We calculate such distortions by world-sheet Liouville string theory (perturbative) methods. The resulting anisotropies are found to be proportional to the average recoil velocity and density of the D-particles. In our analysis we employ a regulated version of de Sitter space, allowing for graceful exit from inflation. This guarantees the asymptotic flatness of the space time, as required for a consistent interpretation, within an effective field theory context, of the associated Bogolubov coefficients as particle number densities. The latter are computed by standard WKB methods. | |||
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Mavromatos, N. E. Papavassiliou, Joannis 2004 Super heavy dark matter anisotropies from D-particles in the early universe International Journal of Modern Physics A 19 14 2355 2383 |
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| http://dx.doi.org/10.1142/S0217751X04018397 |
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22 - Física [3699]