Cosmological data has opened up new vistas on fundamental
physics yet it is limited in its scope. While it has given us
tantalizing hints at how the Universe might be expanding, it is
unclear whether it can ever be used to find the
microphysical...
In a spacetime with asymptotically anti-de-Sitter boundaries,
localized bulk events produce characteristic signals at boundary
locations that are lightlike from the event. I will describe
(thought) experiments that use boundary wavepackets to...
Discs of stars around super-massive black holes, like the one at
the Galactic centre, evolve primarily via resonant relaxation,
which is the process governing the evolution of the
angular-momentum vectors of stellar orbits about the
super-massive...
Surveys of the mm-wave sky are great resources for astrophysics
and cosmology. Sources that have been studied include solar system
objects, flaring stars, accreting black holes, dusty star forming
galaxies, and galaxy clusters, while cosmological...
