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Jumping Through Loops: On Soft Terms from Large Volume Compactifications
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
The Observed Squeezed Limit of Cosmological Three-Point Functions
of cosmological perturbation theory on these observables. This makes crucial use of Fermi Normal Coordinates and their conformal generalization, which we introduce here and discuss in detail. As an
Oscillations in the CMB from Axion Monodromy Inflation
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
Dante's Inferno
We present a simple two-field model of inflation and show how to embed it in string theory as a straightforward generalization of axion monodromy models. Phenomenologically, the predictions are
Gauge field production in supergravity inflation: Local non-Gaussianity and primordial black holes
When inflation is driven by a pseudoscalar field χ coupled to vectors as α4χFF˜, this coupling may lead to a copious production of gauge quanta, which in turns induces non-Gaussian and
Resonant non-gaussianity
We provide a derivation from first principles of the primordial bispectrum of scalar perturbations produced during inflation driven by a canonically normalized scalar field whose potential exhibits
New window on primordial non-gaussianity.
It is pointed out that correlations between μ distortion and temperature anisotropies can be used to test gaussianity at these very small scales and a Fisher matrix forecast of the observational constraints on f(NL)(loc) is presented.
Constraining Running Non-Gaussianity
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
Gauge Field Production in Axion Inflation: Consequences for Monodromy, non-Gaussianity in the CMB, and Gravitational Waves at Interferometers
Models of inflation based on axions, which owe their popularity to the robustness against UV corrections, have also a very distinct class of signatures. The relevant interactions of the axion are a
Chasing brane inflation in string theory
We investigate the embedding of brane–antibrane inflation into a concrete type IIB string theory compactification with all moduli fixed. Specifically, we are considering a D3-brane, whose position