Inflationary Attractor from Tachyonic Matter

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We study the complete evolution of a flat and homogeneous universe dominated by tachyonic matter. We demonstrate the attractor behaviour of the tachyonic inflation using the Hamilton-Jacobi formalism. We else obtain analytical approximations to the trajectories of the tachyon field in different regions. The numerical calculation shows that an initial non-vanishing momentum does not prevent the onset of inflation. The slow-rolling solution is an attractor.
4 pages, 2 figures, RevTeX

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/124871

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0304236
 http://arxiv.org/abs/hep-ph/0304236
 Phys.Rev. D68 (2003) 043508
 doi:10.1103/PhysRevD.68.043508

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arXiv