On the inflationary solutions in higher-derivative gravity with dilaton field

Details On the inflationary solutions in higher-derivative gravity with dilaton field On the inflationary solutions in higher-derivative gravity with dilaton field

1997-06-25

arxiv.org/abs/hep-th/9706179v1

Phys.Lett.B414:34-44,1997

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, LaTeX, no figures

Scientific paper

10.1016/S0370-2693(97)01146-5

We discuss the existence of de Sitter inflationary solutions for the string-inspired fourth-derivative gravity theories with dilaton field. We consider a space-time of arbitrary dimension D and an arbitrary parametrization of the target space metric. The specific features of the theory in dimension D=4 and those of the special ghost-free parametrization of the metric are found. We also consider similar string-inspired theories with torsion and construct an inflationary solution with torsion and dilaton for D=4. The stability of the inflationary solutions is also investigated.

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