191 citations · 914 across the 21 of their papers we have counts for
23 papers
Hidden symmetries for transparent de Sitter space
Garrett Compton, Ian A. Morrison
It is known that odd-dimensional de Sitter space acts as a transparent potential for free fields. Previous studies have explained this phenomena by relating de Sitter free field eq…
Fluctuations in a Cosmology with a Space-Like Singularity and their Gauge Theory Dual Description
Robert H. Brandenberger, Yi-Fu Cai, Sumit R. Das +3
We consider a time-dependent deformation of anti-de-Sitter (AdS) space-time which contains a cosmological "singularity" - a space-like region of high curvature. Making use of the A…
On higher spin symmetries in de Sitter QFTs
Renato Costa, Ian A. Morrison
We consider the consequences of global higher-spin symmetries in quantum field theories on a fixed de Sitter background of spacetime dimension . These symmetries enhance t…
Cosmic Microwave Background Spectral Distortions from Cosmic String Loops
Madeleine Anthonisen, Robert Brandenberger, Alex Laguë +2
Cosmic string loops contain cusps which decay by emitting bursts of particles. A significant fraction of the released energy is in the form of photons. These photons are injected n…
Sacks of dice with fair totals
Ian Morrison
A fair sack is a finite set of independent dice, not required to be fair and allowed to have any number of sides, for which all totals are equally likely. These have been studied f…
Boundary-to-bulk maps for AdS causal wedges and the Reeh-Schlieder property in holography
Ian A. Morrison
In order to better understand how AdS holography works for sub-regions, we formulate a holographic version of the Reeh-Schlieder theorem for the simple case of an AdS Klein-Gordon…