Thoughts on tachyon cosmology
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- 20 May 2003
- journal article
- Published by IOP Publishing in Classical and Quantum Gravity
- Vol. 20 (12) , S321-S346
- https://doi.org/10.1088/0264-9381/20/12/301
Abstract
After a pedagogical review of elementary cosmology, I go on to discuss some obstacles to obtaining inflationary or accelerating universes in M/String Theory. In particular, I give an account of an old No-Go Theorem to this effect. I then describe some recent ideas about the possible r^ole of the tachyon in cosmology. I stress that there are many objections to a naive inflationary model based on the tachyon, but there remains the possiblity that the tachyon was important in a possible pre-inflationary Open-String Era preceding our present Closed String Era.Keywords
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