Classical cosmologies from ten-dimensional supergravity

Details Classical cosmologies from ten-dimensional supergravity Classical cosmologies from ten-dimensional supergravity

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..34.1739g&link_type=abstract

Physical Review D (Particles and Fields), Volume 34, Issue 6, 15 September 1986, pp.1739-1743

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10

Supergravity, Field Theories In Dimensions Other Than Four

Scientific paper

We study possible cosmological solutions to N=1, D=10 supergravity with the Yang-Mills field strength set to zero and show that the model accepts both power-law solutions and exponential solutions in the large-time limit. The stability of these solutions is investigated. It is found that a shrinking internal space is compatible with several field configurations. Using a stable power-law solution we analyze the conditions to obtain enough inflation in the physical space from the shrinking internal dimensions. We also show that for a flat topology a de Sitter phase is possible for late times. We used the consistency with the density perturbations to fix the inflationary parameter.

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