440 citations · 9.4k across the 157 of their papers we have counts for
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Lifshitz solutions in supergravity and string theory
Ruth Gregory, Susha L. Parameswaran, Gianmassimo Tasinato +1
We derive Lifshitz configurations in string theory for general dynamical exponents z \geq 1. We begin by obtaining simple Li x Omega solutions to supergravities in diverse dimensio…
Scale-dependent non-Gaussianity probes inflationary physics
Christian T. Byrnes, Mischa Gerstenlauer, Sami Nurmi +2
We calculate the scale dependence of the bispectrum and trispectrum in (quasi) local models of non-Gaussian primordial density perturbations, and characterize this scale dependence…
Towards multi-field D-brane inflation in a warped throat
Heng-Yu Chen, Jinn-Ouk Gong, Kazuya Koyama +1
We study the inflationary dynamics in a model of slow-roll inflation in warped throat. Inflation is realized by the motion of a D-brane along the radial direction of the throat, an…
Non-standard primordial fluctuations and nongaussianity in string inflation
C. P. Burgess, M. Cicoli, M. Gomez-Reino +3
Inflationary scenarios in string theory often involve a large number of light scalar fields, whose presence can enrich the post-inflationary evolution of primordial fluctuations ge…
Inflationary Infrared Divergences: Geometry of the Reheating Surface vs. delta N Formalism
Christian T. Byrnes, Mischa Gerstenlauer, Arthur Hebecker +2
We describe a simple way of incorporating fluctuations of the Hubble scale during the horizon exit of scalar perturbations into the delta N formalism. The dominant effect comes fro…