Abstract
We discuss how to obtain inflationary and accelerating cosmological solutions in the context of string theories and M-theory. First, we review the no-go theorem which forbids such solutions in the low-energy effective string theories, i.e. supergravities. Then we show that this can be avoided if we consider time-dependent internal space. This is given by the S-brane solutions in string and M theories. Unfortunately these solutions do not give enough e-folding. We then argue that higher order corrections in string and M theories can give inflationary solutions with big enough e-folding.
Original language | English |
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Pages | 92-102 |
Number of pages | 11 |
State | Published - 2010 |
Event | 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 - Kyoto, Japan Duration: 21 Sep 2010 → 25 Sep 2010 |
Conference
Conference | 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 |
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Country/Territory | Japan |
City | Kyoto |
Period | 21/09/10 → 25/09/10 |