Cosmological perturbations and noncommutative tachyon inflation

Details Cosmological perturbations and noncommutative tachyon inflation Cosmological perturbations and noncommutative tachyon inflation

2004-02-03

arxiv.org/abs/astro-ph/0402063v1

Phys.Rev. D70 (2004) 123504

Astronomy and Astrophysics

Astrophysics

6 two-column pages, no figure

Scientific paper

10.1103/PhysRevD.70.123504

The motivation for studying the rolling tachyon and non-commutative inflation comes from string theory. In the tachyon inflation scenario, metric perturbations are created by tachyon field fluctuations during inflation. We drive the exact mode equation for scalar perturbation of the metric and investigate the cosmological perturbations in the commutative and non-commutative inflationary spacetime driven by the tachyon field which have a Born-Infeld Lagrangian.

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