Phys. Rev. D 66, 063511 (2002) [3 pages]Power-law inflation from the rolling tachyonReceived 23 April 2002; published 25 September 2002 Modeling the potential by an inverse square law in terms of the tachyon field [V(T)=βT-2] we find an exact solution for a spatially flat isotropic universe. We show that for β>2√3/3 the model undergoes power-law inflation. A way to construct other exact solutions is specified and exemplified. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.66.063511
DOI:
10.1103/PhysRevD.66.063511
PACS:
98.80.Cq
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