Mr
Tom Steudtner
(University of Sussex)
11/01/2018, 13:30
We investigate a class of strictly four-dimensional, renormalisible gauge-Yukawa theories which exhibit Asymptotic Safety - their UV behaviour is controlled by an interacting, ultraviolet fixed point. The conformal window introduced by this fixed point is studied in a systematic expansion, provided by the Veneziano limit. Constraints from the strong coupling limit, fixed point mergers and...
Ms
Nicola Rendell
(University of York)
11/01/2018, 14:10
Our universe is believed to have experienced an inflationary period in its early stages of
development. It is therefore of interest to understand the behaviour of the graviton two point
function in an inflationary spacetime. We consider a background Friedman-Lemaitre-
Robertson-Walker (FLRW) spacetime, which is a (slow roll) inflationary spacetime. The
graviton two point function is...
Mr
Hynek Paul
(University of Southampton)
11/01/2018, 14:30
I will describe the problem of constructing perturbative loop corrections to AdS_5 supergravity amplitudes, which are dual to 4pt-correlators in N=4 super Yang-Mills theory. By using the consistency of the CFT's operator product expansion and known tree-level supergravity results, we are able to bootstrap loop corrections by imposing a consistent spectrum of exchanged double-trace operators.
