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- W2045340415 abstract "We study classical solutions of the bosonic sector of seven-dimensional supergravity theory. This study is three-fold: first, we look for power law solutions in a space which is the Cartesian product of a four-dimensional Robertson-Walker metric and a compact internal space; next, for the same geometric configuration, we sketch the phase diagram of all possible stable solutions; finally, we consider the evolution of scalar fluctuations on the background of the exact solutions found here. We observe that in spite of the presence of a potential term and a nontrivial coupling of three scalar fields, no inflationary scenario can emerge from such theory, and that all stable solutions display a big-bang type singularity. We conclude that the supersymmetric theories are well suited to describe the post-inflationary behavior of the Universe emerging from the inflationary phase before it enters the pure radiation stage." @default.
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- W2045340415 date "1995-04-01" @default.
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- W2045340415 title "POST-INFLATIONARY COSMOLOGICAL MODEL BASED ON THE SEVEN-DIMENSIONAL SUPERGRAVITY" @default.
- W2045340415 doi "https://doi.org/10.1142/s0218271895000211" @default.
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