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Separate Universe Consistency Relation and Calibration of Halo Bias
Yin Li, Wayne Hu, Masahiro Takada
Linear halo bias is the response of dark matter halo number density to a long wavelength fluctuation in the dark matter density. Using abundance matching between separate universe…
Nonlinear Excitations in Inflationary Power Spectra
V Miranda, Wayne Hu, Chen He +1
We develop methods to calculate the curvature power spectrum in models where features in the inflaton potential nonlinearly excite modes and generate high frequency features in the…
Self-accelerating Massive Gravity: Superluminality, Cauchy Surfaces and Strong Coupling
Pavel Motloch, Wayne Hu, Austin Joyce +1
Self-accelerating solutions in massive gravity provide explicit, calculable examples that exhibit the general interplay between superluminality, the well-posedness of the Cauchy pr…
Compensated isocurvature perturbations in the curvaton model
Chen He, Daniel Grin, Wayne Hu
Primordial fluctuations in the relative number densities of particles, or isocurvature perturbations, are generally well constrained by cosmic microwave background (CMB) data. A le…
Running from Features: Optimized Evaluation of Inflationary Power Spectra
Hayato Motohashi, Wayne Hu
In models like axion monodromy, temporal features during inflation which are not associated with its ending can produce scalar, and to a lesser extent, tensor power spectra where d…