Found 8 result(s)

### 26.11.2020 (Thursday)

Regular Seminar Paul au:Heslop '><span class='hl'>Paul</span> Heslop (Durham University)

 at: 14:00 QMWroom Zoom abstract: For zoom link please email s.nagyATqmul.ac.uk There will be a pre-seminar for students at 13:30. Abstract: I will discuss 2 recent results arising out of the recent resurgence in concrete tests / predictions of AdS/CFT over the last few years. The first is the precise identification of the CFT operators dual to single particle supergravity states (based on 2007.095395) and the second is a forthcoming work explicitly relating four-point correlators to a string effective action on AdSxS.

### 08.10.2015 (Thursday)

#### Higherchargehalf-BPSfour-pointcorrelationfunctionsinplanarN=4SYM

Regular Seminar Paul au:Heslop'><span class='hl'>Paul</span> Heslop (Durham)

 at: 14:00 QMWroom G.O. Jones 610 abstract: We will show how to obtain half-BPS four-point correlation functions in N=4 SYM at up to 3 loops using symmetries, analytic properties the Wilson loop/correlator duality, planarity and some minimal knowledge of the OPE structure relating four-point correlators of different charges. These can be used to verify recent predictions for OPE coefficients arising from integrability.

### 24.10.2013 (Thursday)

#### Fourpointcorrelationfunctionsand5-pointamplitudes

Regular Seminar Paul au:Heslop'><span class='hl'>Paul</span> Heslop (Durham University)

 at: 14:00 QMWroom Room 208 abstract: Abstract: There has been much progress in understanding the four-point correlator of Stress Energy multiplets in N=4 SYM recently. I will discuss recent progress in evaluating high loop Feynman integrals using leading singularities, asymptotics and the symbol. This is used to evaluate the three-loop four-point correlation function from its integrand. Then I will show how the full (parity even and odd) 5-point amplitude can be found from the same four-point correlator integrand.

### 12.05.2011 (Thursday)

#### DualitiesforscatteringamplitudesinplanarN=4SYM

Regular Seminar Paul au:Heslop'><span class='hl'>Paul</span> Heslop (Durham)

 at: 14:00 QMWroom 602 abstract: I will review weak-weak dualities relating scattering amplitudes to Wilson loops on the one hand and correlation functions of gauge invariant operators on the other. The Wilson loop / amplitude duality has lead to both numerical and analytic results for MHV scattering amplitudes at two-loops and beyond, including the determination of two loop MHV n-point scattering amplitudes for any n in a certain kinematical regime. The duality with correlation functions has been extended to all scattering amplitudes in the theory and we give explicit examples illustrating this.