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26 papers · 2 filters
Warped Reheating in Brane-Antibrane Inflation
N. Barnaby, C. P. Burgess, J. M. Cline
We examine how reheating occurs after brane-antibrane inflation in warped geometries, such as those which have recently been considered for Type IIB string vacua. We adopt the stan…
Towards a Natural Theory of Dark Energy: Supersymmetric Large Extra Dimensions
C. P. Burgess
The first part of this article summarizes the evidence for Dark Energy and Dark Matter, as well as the naturalness issues which plague current theories of Dark Energy. The main poi…
Back-Reaction and the Trans-Planckian Problem of Inflation Revisited
Robert H. Brandenberger, Jerome Martin
It has recently been suggested that Planck scale physics may effect the evolution of cosmological fluctuations in the early stages of cosmological inflation in a non-trivial way, l…
Tachyon Defect Formation and Reheating in Brane-Antibrane Inflation
Neil Barnaby, James M. Cline
We study analytically the dynamical formation of lower dimensional branes at the endpoint of brane-antibrane inflation through the condensation of topological defects of the tachyo…
Linear Regge trajectories from worldsheet lattice parton field theory
Tirthabir Biswas, Marc Grisaru, Warren Siegel
We show that unlike conventional field theory, the particle field theory of the string's constituents produces in the ladder approximation linear Regge trajectories, in accord with…
General Axisymmetric Solutions and Self-Tuning in 6D Chiral Gauged Supergravity
C. P. Burgess, F. Quevedo, G. Tasinato +1
We re-examine the properties of the axially-symmetric solutions to chiral gauged 6D supergravity, recently found in refs. hep-th/0307238 and hep-th/0308064. Ref. hep-th/0307238 fin…