Rolling Tachyon in Brane World Cosmology from Superstring Field Theory

Details Rolling Tachyon in Brane World Cosmology from Superstring Field Theory Rolling Tachyon in Brane World Cosmology from Superstring Field Theory

2002-07-12

arxiv.org/abs/hep-th/0207119v4

Phys.Rev. D67 (2003) 083517

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, one figure. This version quantifies constraints on various phenomenological models for tachyon decay

Scientific paper

10.1103/PhysRevD.67.083517

The pressureless tachyonic matter recently found in superstring field theory has an over-abundance problem in cosmology. We argue that this problem is naturally solved in the brane inflationary scenario if almost all of the tachyon energy is drained (via its coupling to the inflaton and matter fields) to heating the universe, while the rest of the tachyon energy goes to a network of cosmic strings (lower-dimensional BPS D-branes) produced during the tachyon rolling at the end of inflation.

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