810 citations
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81 papers
On the full quantum trispectrum in multi-field DBI inflation
Shuntaro Mizuno, Frederico Arroja, Kazuya Koyama
We compute the leading order connected four-point function of the primordial curvature perturbation coming from the four-point function of the fields in multi-field DBI inflation m…
The Growth of Structure in Interacting Dark Energy Models
Gabriela Caldera-Cabral, Roy Maartens, Bjoern Malte Schaefer
If dark energy interacts with dark matter, there is a change in the background evolution of the universe, since the dark matter density no longer evolves as a^{-3}. In addition, th…
Cepheid Calibrations of Modern Type Ia Supernovae:Implications for the Hubble Constant
Adam G. Riess, Lucas Macri, Weidong Li +9
This is the first of two papers reporting measurements from a program to determine the Hubble constant to 5% precision from a refurbished distance ladder. We present new observatio…
Lorentz boost and non-Gaussianity in multi-field DBI-inflation
Shuntaro Mizuno, Frederico Arroja, Kazuya Koyama +1
We show that higher-order actions for cosmological perturbations in the multi-field DBI-inflation model are obtained by a Lorentz boost from the rest frame of the brane to the fram…
Path integral duality modified propagators in spacetimes with constant curvature
Dawood Kothawala, L. Sriramkumar, S. Shankaranarayanan +1
The hypothesis of path integral duality provides a prescription to evaluate the propagator of a free, quantum scalar field in a given classical background, taking into account the…
Subdegree Sunyaev-Zel'dovich Signal from Multifrequency BOOMERanG observations
M. Veneziani, A. Amblard, A. Cooray +36
The Sunyaev-Zel'dovich (SZ) effect is the inverse Compton-scattering of cosmic microwave background (CMB) photons by hot electrons in the intervening gas throughout the universe. T…