A tachyonic extension of the stringy no-go theorem

Details A tachyonic extension of the stringy no-go theorem A tachyonic extension of the stringy no-go theorem

1995-03-29

arxiv.org/abs/hep-th/9503216v2

Phys.Rev. D55 (1997) 6600-6602

Physics

High Energy Physics

High Energy Physics - Theory

TeX file (PHYZZX), 10 pages, change in the title, many changes in the text (the version to appear in Phys. Rev. D)

Scientific paper

10.1103/PhysRevD.55.6600

We investigate the tachyon-dilaton-metric system to study the "graceful exit" problem in string theoretic inflation, where tachyon plays the role of the scalar field. From the phase space analysis, we find that the inflationary phase does not smoothly connect to a Friedmann-Robertson-Walker (FRW) expanding universe, thereby providing a simple tachyonic extension of the recently proved stringy no-go theorem.

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