26 citations · 61 across the 6 of their papers we have counts for
7 papers
Analytical approximations for curved primordial tensor spectra
Ezra Msolla, Ayngaran Thavanesan
We build upon previous analytical treatments of scalar perturbations in curved inflationary universes to obtain analytical templates for the primordial tensor power spectrum in mod…
Holographic Cosmology at Finite Time
Goncalo Araujo-Regado, Ayngaran Thavanesan, Aron C. Wall
We investigate Cauchy Slice Holography in de Sitter spacetime. By performing a deformation of a (bottom-up) dS/CFT model, we obtain a holographic theory living on flat Cauchy…
Kosmic Field Theories: Towards Holographic Duals for Unitary String Cosmologies
Ayngaran Thavanesan, Aron C. Wall
Recent work on cosmological amplitudes has established reality conditions (derived from unitarity) for general particle-creation processes in flat FLRW cosmologies, in the Bunch-Da…
No-go Theorem for Cosmological Parity Violation
Ayngaran Thavanesan
A no-go theorem for parity-violation in even -dimensional spacetimes invariant under and dilatations (as well as the implications for odd ) is derived. For the case…
The Cosmological CPT Theorem
Harry Goodhew, Ayngaran Thavanesan, Aron C. Wall
The CPT theorem states that a unitary and Lorentz-invariant theory must also be invariant under a discrete symmetry which reverses charge, time, and one spatial dire…
On Graviton non-Gaussianities in the Effective Field Theory of Inflation
Giovanni Cabass, David Stefanyszyn, Jakub Supeł +1
We derive parity-even graviton bispectra in the Effective Field Theory of Inflation (EFToI) to all orders in derivatives. Working in perturbation theory, we construct all cubic int…
Analytical approximations for curved primordial power spectra
Ayngaran Thavanesan, Denis Werth, Will Handley
We extend the work of Contaldi et al. and derive analytical approximations for primordial power spectra arising from models of inflation which include primordial spatial curvature.…