Brane tunneling and virtual brane-antibrane pairs

Details Brane tunneling and virtual brane-antibrane pairs Brane tunneling and virtual brane-antibrane pairs

2007-09-24

arxiv.org/abs/0709.3532v1

PoS Cargese2007:022,2007

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, 6 figures. To appear in the proceedings of Cargese Summer School 2007 on "Cosmology and Particle Physics Beyond the S

Scientific paper

We survey barrier penetration by quantum tunneling for four cases: nonrelativistic point particles, scalar fields, relativistic point particles, and DBI branes. We examine two novel features that arise for DBI brane tunneling: the rate can sometimes increase as the barrier gets higher; and the instanton "wrinkles". We show that these features can be understood as the effect of the quantum sea of virtual brane-antibrane pairs. This sea exponentially augments the decay rate, with possible cosmological consequences.

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