1.9k citations · 16.3k across the 107 of their papers we have counts for
108 papers
Generating $\fnl$ at $\ell\lsim 60$
David H. Lyth
The CMB anisotropy at $\ell\lsim 60$ seems to have some special features which include (i) a dipole modulation and (ii) a decrease in power. It is known that both of these effects…
BICEP2, the curvature perturbation and supersymmetry
David H. Lyth
The tensor fraction found by BICEP2 corresponds to a Hubble parameter $H\simeq 1.0\times 10^{14}\GeV$ during inflation. This has two implications for the (single-fie…
The CMB asymmetry from inflation
David H. Lyth
Erickcek, Kamionkowski and Carroll proposed in 2008 that the dipole modulation of the CMB could be due to a very large scale perturbation of the field causing the primordial cu…
The statistically anisotropic curvature perturbation generated by f(ϕ)^2 F^2
David H. Lyth, Mindaugas Karčiauskas
The inflaton might be coupled to a gauge field through a term f^2(ϕ) F_μνF^μν. If f \propto a^{-2} where a(t) is the scale factor, the perturbation δW of the gauge field generates…
Modulation of the waterfall by a gauge field
David H. Lyth, Mindaugas Karciauskas
We present the first complete calculation of the curvature perturbation generated during the hybrid inflation waterfall, caused by the coupling of the waterfall field to a gauge fi…
Statistically anisotropic curvature perturbation generated during the waterfall
David H. Lyth, Mindaugas Karciauskas
If the waterfall field of hybrid inflation couples to a U(1) gauge field, the waterfall can generate a statistically anisotropic contribution to the curvature perturbation. We inve…