23 citations · 72 across the 5 of their papers we have counts for
4 papers · 1 filter
Chiral Imprint of a Cosmic Gauge Field on Primordial Gravitational Waves
Jannis Bielefeld, Robert R. Caldwell
A cosmological gauge field with isotropic stress-energy introduces parity violation into the behavior of gravitational waves. We show that a primordial spectrum of inflationary gra…
Cosmological Leverage from the Matter Power Spectrum in the Presence of Baryon and Nonlinear Effects
Jannis Bielefeld, Dragan Huterer, Eric V. Linder
We investigate how the use of higher wavenumbers (smaller scales) in the galaxy clustering power spectrum influences cosmological constraints. We take into account uncertainties fr…
Dark Energy Scaling from Dark Matter to Acceleration
Jannis Bielefeld, Robert R. Caldwell, Eric V. Linder
The dark sector of the Universe need not be completely separable into distinct dark matter and dark energy components. We consider a model of early dark energy in which the dark en…
Freezing Out Early Dark Energy
Jannis Bielefeld, W. L. Kimmy Wu, Robert R. Caldwell +1
A phenomenological model of dark energy that tracks the baryonic and cold dark matter at early times but resembles a cosmological constant at late times is explored. In the transit…