10ᵗʰ Anniversary Special Edition

Session

Session V

11 Jan 2018, 13:30

Centre for Particle Theory, Durham

10. UV conformal window for asymptotically safe gauge-Yukawa theories

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...

34. An Introduction to Higgsplosion

Mr Joey Reiness (IPPP)

11/01/2018, 13:50

What is Higgsplosion? Why should you care? By adding literally nothing to the SM it can be argued that there is some physical minimum resolvable scale. Beyond this scale, particles 'Higgsplode' into a large number of soft quanta. This has interesting implications for the UV behaviour of the theory. My talk will be in three parts: 1. What is it? 2. Effect on RG running in phi4 theory...

29. Infrared divergences for quantum fields in cosmological spacetimes

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...

21. Quantum Gravity from Conformal Field Theory

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.