2014-2015 Postgraduate

First term seminars take place on Tuesdays at 11am in room 54/8033.

14/10/14 - Kostas Skenderis - Introduction to gauge/gravity duality and holographic inflation

21/10/14 - Marika Taylor - Inner horizons and the fuzzball proposal

28/10/14 - String theory seminar

04/11/14 - Marco Caldarelli - Asymptotic symmetries of Yang-Mills theories

11/11/14 - Marco Caldarelli - Asymptotic symmetries of Yang-Mills theories (part II)

18/11/14 - String theory seminar

25/11/14 - James Drummond - Causality constraints on corrections to the graviton three-point coupling

02/12/14 - Chris Howls - Sum-ware over the rainbow: hyper, higher and transseries asymptotics

09/12/14 - Ariana Christodoulou - Journal club on arXiv:1411.7041

Second term seminars take place on Tuesdays at 9am in room 54/8031

27/01/15 - Peter Jones - The emergence of gravitation from entanglement in AdS/CFT

03/02/15 - Ben Withers - Holography and off-center collisions of localized shock waves (arXiv:1501.04644)

10/02/15 - Luigi Delle Rose (INFN-Lecce) - Vacuum Stability in SM extensions with TeV Scale Right Handed Neutrinos

17/02/15 - No seminar

24/02/15 - Peter Jones - The emergence of gravitation from entanglement in AdS/CFT (part II)

03/03/15 - William Woodhead - Journal club on arXiv:1412.7561

10/03/15 - Dawei Pang - Journal club on arXiv:1503.00627

17/03/15 - Yafet Sanchez - Journal club on arXiv:1308.1977

19/05/15 -

26/05/15 -

Abstracts

Sum-ware over the rainbow: hyper, higher and transseries asymptotics

Chris Howls

This talk will give an account of some further key developments in the quantitative use of concepts of resurgence in exponential asymptotics. Ideas include algebraic hyperasymptotic resolution of the Borel plane, the higher order Stokes phenomenon, virtual turning points and multiple-scales transseries summation. Applications include to multidimensional integrals, nonlinear ODEs, PDES, boundary layer calculations and even to jet engine noise.

The emergence of gravitation from entanglement in AdS/CFT

Peter Jones

In this talk I will discuss some recent attempts to describe the emergence of gravitation from entanglement in AdS/CFT, focusing on arXiv:1312.7856 and arXiv:1412.1879.

Vacuum Stability in SM extensions with TeV Scale Right Handed Neutrinos

Luigi Delle Rose (INFN-Lecce)

Abstract: We investigate the stability of the scalar potential in extensions of the Standard Model with three right handed neutrinos at the TeV scale. In particular, we focus our analysis on a minimal U(1)' extension with type-I and inverse seesaw mechanisms for the generation of the small neutrino masses. This class of models, in which the vacuum expectation value of the extra scalar is chosen in the TeV range, is potentially accessible at the LHC experiment. We show that the requirements of stability of the potential within the perturbative evolution under the renormalization group impose significant constraints on the Yukawa couplings of the right handed neutrinos.