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Scientific article
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English

On ekpyrotic brane collisions

ContributorsRasanen, Syksy
Published inNuclear physics. B, vol. 626, no. 1, p. 183-206
Publication date2002
Abstract

We derive the five-dimensional metrics which describe a non-singular boundary brane collision in the ekpyrotic scenario in the context of general relativity, taking into account brane tension. We show that the metrics constrain matter created in the collision to have negative energy density or pressure. In particular, the minimal field content of heterotic M-theory leads to negative energy density. We also consider bulk brane-boundary brane collisions and show that the collapse of the fifth dimension is an artifact of the four-dimensional effective theory.

Citation (ISO format)
RASANEN, Syksy. On ekpyrotic brane collisions. In: Nuclear physics. B, 2002, vol. 626, n° 1, p. 183–206. doi: 10.1016/S0550-3213(02)00056-1
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ISSN of the journal0550-3213
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