Inflation from a tachyon fluid

By M. Fairbairn, M. Tytgat. 2002

219 citations recorded by the source corpus.

Motivated by recent works of Sen [hep-th/0203211, hep-th/0203265] and Gibbons [hep-th/0204008], we study the evolution of a flat and homogeneous universe dominated by tachyon matter. In particular, we analyze the necessary conditions for inflation in the early roll of a single tachyon field. Comparison with string theory reveals that the potential is too steep to explain the fluctuations in the CMBR. We suggest a scenario based on the simultaneous decay of many branes and comment on the issue of reheating of the universe after tachyon rolling.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c6a2310aa0d3102f8952fa060ad3bb4a6511d05d

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Citations in the corpus

Coupling of rolling tachyon to closed strings (2002, background): “These features are crucial in the investigation of cosmology based on rolling tachyon [10, 11, 12 ].”
Cosmological parameters from supernova observations: A critical comparison of three data sets (2003, background): “…Wang, & Steinhardt 1999) and the other corresponding to the tachyonic scalar fields (Padmanabhan 2002; Padmanabhan & Choudhury 2002; Frolov, Kofman, & Starobinsky 2002; Shiu & Wasserman 2002; Gibbons 2002; Fairbairn & Tytgat 2002; Mukohyama 2002; Feinstein 2002; Bagla, Jassal, & Padmanabhan 2003).”
Problems with Tachyon Inflation (2002, background): “[23] one power of gs in the expression for M 2 p was missing, which affected their estimates of the magnitude of perturbations of metric.”
Power-Law Inflation from the Rolling Tachyon (2002, background): “The Friedman equation and the entropy conservation equation take the form [5], [6]:”