145 citations · 301 across the 4 of their papers we have counts for
4 papers
Non-gaussianity from the second-order cosmological perturbation
David H. Lyth, Yeinzon Rodriguez
Several conserved and/or gauge invariant quantities described as the second-order curvature perturbation have been given in the literature. We revisit various scenarios for the gen…
Leptogenesis and tensor polarisation from a gravitational Chern-Simons term
David H. Lyth, Carlos Quimbay, Yeinzon Rodriguez
Within an effective field theory derived from string theory, the universal axion has to be coupled to the the gravitational Chern-Simons (gCS) term. During any era when the axion f…
Low scale inflation and the curvaton mechanism
Konstantinos Dimopoulos, David H. Lyth, Yeinzon Rodriguez
The primordial curvature perturbation may be due to a `curvaton' field, which dominates (or almost dominates) the energy density before it decays. In the simplest version of the cu…
Note about leptogenesis from gravity waves in models of inflation
David H. Lyth, Yeinzon Rodriguez, Carlos Quimbay
We show how the mechanism recently proposed by Alexander, Peskin, and Sheikh-Jabbari, in which the observed cosmic matter-antimatter asymmetry comes from the contribution of the co…