303 citations · 665 across the 14 of their papers we have counts for
14 papers
Constraints on the Topology of the Universe: Extension to General Geometries
Pascal M. Vaudrevange, Glenn D. Starkman, Neil J. Cornish +1
We present an update to the search for a non-trivial topology of the universe by searching for matching circle pairs in the cosmic microwave background using the WMAP 7 year data r…
A Toy Model For Single Field Open Inflation
Pascal M. Vaudrevange, Alexander Westphal
Inflation in an open universe produced by Coleman-De Luccia (CDL) tunneling induces a friction term that is strong enough to allow for successful small-field inflation in models th…
Validity of the kink approximation to the tunneling action
Koushik Dutta, Cecelie Hector, Thomas Konstandin +2
Coleman tunneling in a general scalar potential with two non-degenerate minima is known to have an approximation in terms of a piecewise linear triangular-shaped potential with sha…
More Exact Tunneling Solutions in Scalar Field Theory
Koushik Dutta, Cecelie Hector, Pascal M. Vaudrevange +1
We present exact bounce solutions and amplitudes for tunneling in i) a piecewise linear-quartic potential and ii) a piecewise quartic-quartic potential. We cross check their correc…
The Overshoot Problem in Inflation after Tunneling
Koushik Dutta, Pascal M. Vaudrevange, Alexander Westphal
We show the absence of the usual parametrically large overshoot problem of small-field inflation if initiated by a Coleman-De Luccia (CDL) tunneling transition from an earlier vacu…
An Exact Tunneling Solution in a Simple Realistic Landscape
Koushik Dutta, Pascal M. Vaudrevange, Alexander Westphal
We present an analytical solution for the tunneling process in a piecewise linear and quadratic potential which does not make use of the thin-wall approximation. A quadratic potent…