Multifield models of inflation with nonminimal couplings are in excellent agreement with the
recent results from Planck. Across a broad range of couplings and initial conditions, such …

Inflationary α-attractor models in supergravity, which provide excellent fits to the latest
observational data, are based on the Poincaré disk hyperbolic geometry. We refine these …

Axions arise in many theoretical extensions of the Standard Model of particle physics, in
particular the “string axiverse.” If the axion masses, ma, and (effective) decay constants, fa …

We explore whether multifield inflationary models make unambiguous predictions for
fundamental cosmological observables. Focusing on N-quadratic inflation, we numerically …

Supersymmetric hybrid inflation is an exquisite framework to connect inflationary cosmology
to particle physics at the scale of grand unification. Ending in a phase transition associated …

We present MULTIMODECODE, a Fortran 95/2000 package for the numerical exploration of
multifield inflation models. This program facilitates efficient Monte Carlo sampling of prior …

In minimally coupled scalar field theories with a potential of the slow-roll type, we give a
detailed description of the complex O (4)-symmetric solutions to Einstein's equations on the …

Prior to recombination, Silk damping causes the dissipation of energy from acoustic waves
into the monopole of the Cosmic Microwave Background (CMB), resulting in spectral …

While cosmological inflation can erase primordial inhomogeneities, it is possible that
inflation may not begin in a significantly inhomogeneous universe. This issue is particularly …

This paper presents a method for obtaining an analytic expression for the density function of
observables in multifield models of inflation with sum-separable potentials. The most striking …