1.9k citations · 16.3k across the 107 of their papers we have counts for
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Inflation models and observation
Laila Alabidi, David Lyth
We consider small-field models which invoke the usual framework for the effective field theory, and large-field models which go beyond that. Present and future possibilities for di…
Generating the curvature perturbation at the end of inflation
David H. Lyth
The dominant contribution to the primordial curvature perturbation may be generated at the end of inflation. Taking the end of inflation to be sudden, formulas are presented for th…
Forming sub-horizon black holes at the end of inflation
David. H Lyth, Karim A. Malik, Misao Sasaki +1
Previous authors have calculated the mass function of primordial black holes only on scales which are well outside the horizon at the end of inflation. Here we extend the calculati…
The bound on the primordial tensor perturbation
David H. Lyth
I recall the well-known sufficient conditions for the bound on the spectrum of the primordial tensor perturbation. Two recent papers claim a violation of this bound, withou…
A Bound Concerning Primordial Non-Gaussianity
David H. Lyth, Ignacio Zaballa
Seery and Lidsey have calculated the three-point correlator of the light scalar fields, a few Hubble times after horizon exit during inflation. Lyth and Rodriguez have calculated t…
Detecting a small perturbation through its non-Gaussianity
Lotfi Boubekeur, David. H. Lyth
A highly non-gaussian cosmological perturbation with a flat spectrum has unusual stochastic properties. We show that they depend on the size of the box within which the perturbatio…
The inflationary prediction for primordial non-gaussianity
David H. Lyth, Yeinzon Rodriguez
We extend the δN formalism so that it gives all of the stochastic properties of the primordial curvature perturbation ζif the initial field perturbations are gaussian. The calculat…
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…