303 citations · 2.6k across the 55 of their papers we have counts for
12 papers · 1 filter
Inflationary trispectrum from graviton exchange
David Seery, Martin S. Sloth, Filippo Vernizzi
We compute the connected four-point correlation function of the primordial curvature perturbation generated during inflation with standard kinetic terms, where the correlation is e…
Magnetogenesis and the primordial non-gaussianity
David Seery
The primordial density fluctuation inevitably couples to all forms of matter via loop corrections and depends on the ambient conditions while inflation was ongoing. This gives us a…
Non-gaussianity of inflationary field perturbations from the field equation
David Seery, Karim A. Malik, David H. Lyth
We calculate the tree-level bispectrum of the inflaton field perturbation directly from the field equations, and construct the corresponding f_NL parameter. Our results agree with…
Different approaches to the second order Klein-Gordon equation
Karim A. Malik, David Seery, Kishore N. Ananda
We derive the Klein--Gordon equation for a single scalar field coupled to gravity at second order in perturbation theory and leading order in slow-roll. This is done in two ways: w…
One-loop corrections to the curvature perturbation from inflation
David Seery
An estimate of the one-loop correction to the power spectrum of the primordial curvature perturbation is given, assuming it is generated during a phase of single-field, slow-roll i…
Non-gaussianity from the inflationary trispectrum
David Seery, James E. Lidsey
We present an estimate for the non-linear parameter τ_NL, which measures the non-gaussianity imprinted in the trispectrum of the comoving curvature perturbation, ζ. Our estimate is…
Primordial Non-Gaussianity and Gravitational Waves: Observational Tests of Brane Inflation in String Theory
James E. Lidsey, David Seery
We study brane inflation scenarios in a warped throat geometry and show that there exists a consistency condition between the non-Gaussianity of the curvature perturbation and the…
Classicality of the primordial perturbations
David H. Lyth, David Seery
We show that during inflation, a quantum fluctuation becomes classical at all orders if it becomes classical at first order. Implications are discussed.
Non-Gaussian Inflationary Perturbations from the dS/CFT Correspondence
David Seery, James E. Lidsey
We use the dS/CFT correspondence and bulk gravity to predict the form of the renormalized holographic three-point correlation function of the operator which is dual to the inflaton…
An Observational Test of Holographic Inflation
James E. Lidsey, David Seery
Observational consequences of inflationary cosmology in the holographic dual of the Randall-Sundrum type II braneworld scenario, as motivated by the AdS/CFT correspondence, are inv…
Primordial non-gaussianities from multiple-field inflation
David Seery, James E. Lidsey
We calculate the three-point correlation function evaluated at horizon crossing for a set of interacting scalar fields coupled to gravity during inflation. This provides the initia…
The consistency relation in braneworld inflation
David Seery, Andy Taylor
The braneworld cosmology, in which our universe is imbedded as a hypersurface in a higher dimensional bulk, has the peculiar property that the inflationary consistency relation der…