Extended Inflation from Strings

Details Extended Inflation from Strings Extended Inflation from Strings

1991-09-25

arxiv.org/abs/hep-th/9109049v1

Nucl.Phys. B368 (1992) 463-478

Physics

High Energy Physics

High Energy Physics - Theory

18pp

Scientific paper

10.1016/0550-3213(92)90537-L

We study the possibility of extended inflation in the effective theory of gravity from strings compactified to four dimensions and find that it strongly depends on the mechanism of supersymmetry breaking. We consider a general class of string--inspired models which are good candidates for successful extended inflation. In particular, the $\omega$--problem of ordinary extended inflation is automatically solved by the production of only very small bubbles until the end of inflation. We find that the inflaton field could belong either to the untwisted or to the twisted massless sectors of the string spectrum, depending on the supersymmetry breaking superpotential.

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