125 citations · 1.2k across the 50 of their papers we have counts for
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Moduli Vacuum Misalignment and Precise Predictions in String Inflation
Michele Cicoli, Koushik Dutta, Anshuman Maharana +1
The predictions for all the cosmological observables of any inflationary model depend on the number of e-foldings which is sensitive to the post-inflationary history of the univers…
N-flation with Hierarchically Light Axions in String Compactifications
Michele Cicoli, Koushik Dutta, Anshuman Maharana
We present an explicit embedding of axionic N-flation in type IIB string compactifications where most of the Kahler moduli are stabilised by perturbative effects, and so are hierar…
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…
Combining High-scale Inflation with Low-energy SUSY
Stefan Antusch, Koushik Dutta, Sebastian Halter
We propose a general scenario for moduli stabilization where low-energy supersymmetry can be accommodated with a high scale of inflation. The key ingredient is that the stabilizati…
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…