Oscillations in the CMB from Axion Monodromy Inflation (2009)
Flauger, Raphael, McAllister, Liam, Pajer, Enrico, Westphal, Alexander, Xu, Gang
We study the CMB observables in axion monodromy inflation. These well-motivated scenarios for inflation in string theory have monomial potentials over super-Planckian field ranges, with superimposed...
Constraining Running Non-Gaussianity (2009)
Sefusatti, Emiliano, Liguori, Michele, Yadav, Amit P. S., Jackson, Mark G., Pajer, Enrico
The primordial non-Gaussian parameter fNL has been shown to be scale-dependent in several models of inflation with a variable speed of sound. Starting from a simple ansatz for a scale-dependent...
We study the motion of a (space filling) D3-brane at the tip of a warped deformed conifold, looking for inflationary trajectories. In our setup no anti D3-brane is present and the inflaton potential...
Brane Inflation and Fine Tuning (2007)
We argue about the importance of embedding the successful mechanism of Inflation in the context of a fundamental theory. We review some of the attempts in this direction made in the framework of...
Chasing Brane Inflation in String-Theory (2007)
We investigate the embedding of brane anti-brane inflation into a concrete type IIB string theory compactification with all moduli fixed. Specifically, we are considering a D3-brane, whose position...
Jumping Through Loops: On Soft Terms from Large Volume Compactifications (2007)
Berg, Marcus, Haack, Michael, Pajer, Enrico
We subject the phenomenologically successful large volume scenario of hep-th/0502058 to a first consistency check in string theory. In particular, we consider whether the expansion of the string...
Gravitational radiation from reconnecting strings (2005)
La nuova generazione di rilevatori (VIRGO, LIGO, LISA) di onde gravitazionali darà, nei prossimi anni, nuovi dati con precisioni mai avute prima. Tra le possibili sorgenti di tipo cosmologico, un...