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Enhanced gravitational scattering from large extra dimensions
Kazuya Koyama, Federico Piazza, David Wands
We investigate whether enhanced gravitational scattering on small scales (< 0.1mm), which becomes possible in models with large extra dimensions, can establish statistical equilibr…
Braneworld Flux Inflation
Sugumi Kanno, Jiro Soda, David Wands
We propose a geometrical model of brane inflation where inflation is driven by the flux generated by opposing brane charges and terminated by the collision of the branes, with char…
Slow-roll corrections to inflaton fluctuations on a brane
Kazuya Koyama, Shuntaro Mizuno, David Wands
Quantum fluctuations of an inflaton field, slow-rolling during inflation are coupled to metric fluctuations. In conventional four dimensional cosmology one can calculate the effect…
Coupled boundary and bulk fields in anti-de Sitter
Kazuya Koyama, Andrew Mennim, David Wands
We investigate the dynamics of a boundary field coupled to a bulk field with a linear coupling in an anti-de Sitter bulk spacetime bounded by a Minkowski (Randall-Sundrum) brane. A…