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SAGEX Kickoff Meeting

4–7 Sept 2018
Queen Mary University of London
Europe/London timezone

Session

Research Talks

4 Sept 2018, 10:10
G. O. Jones Lecture Theatre

G. O. Jones Lecture Theatre

Presentation materials

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  1. 56. Welcome (Prof. Bill Spence, Vice Principal for Research, QMUL)
    04/09/2018, 10:10
  2. 37. Integrability, Scattering Amplitudes, and the Breaking of Yangian Invariance
    Matthias Staudacher (Humboldt- Universität zu Berlin)
    04/09/2018, 10:15
  3. 41. Iterative non-iterative Integrals in Higher Loop Calculations
    Johannes Blümlein (DESY Zeuthen)
    04/09/2018, 11:30
  4. 42. Symbolic Summation and Integration Tools for Feynman Integrals
    Carsten Schneider (RISC (Linz) & RISC GmbH)
    04/09/2018, 12:15
  5. 40. Supergravity at Five Loops
    Zvi Bern (UCLA)
    04/09/2018, 14:30
  6. 38. Playful Constructions in Double Copy Predictions (a story about stories)
    John Joseph Carrasco (CEA Saclay)
    04/09/2018, 15:30
  7. 44. Amplitudes on plane wave backgrounds
    Lionel Mason (University of Oxford)
    05/09/2018, 10:15

    We set up the study of scattering amplitudes on both gravitational and gauge theory plane wave backgrounds. We do so with a view to exploring the double copy in a semi-nonperturbative framework and to extend the ambi-twistor string formulae to fully curved backgrounds. We give a double copy prescription at three points, and a version of the curved background BCJ relations at four points. We...

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  8. 45. Classical effective action of dilaton gravity as the double copy of Yang-Mills theory
    Jan Plefka (Humboldt-Universität zu Berlin)
    05/09/2018, 11:30

    I will review the computation of the effective gravitational action in the post-Minkowskian and post-Newtonian approximation by „classically“ integrating out the gravitational field in the path integral. It is then shown how this result for dilaton gravity may be easily obtained through a suitable adaption of the BCJ double copy construction applied to the computation of the effective action...

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  9. 55. Transcendental Functions and Integrability
    Volker Schomerus (DESY)
    05/09/2018, 12:15
  10. 47. N=4 SYM amplitudes and cosmic Galois theory
    Lance Dixon (SLAC)
    05/09/2018, 14:30

    Scattering amplitudes in planar N=4 super-Yang-Mills theory are dual to light-like polygonal Wilson-loop expectation values. In many cases their perturbative expansion can be expressed in terms of multiple polylogarithms that also obey certain single-valuedness conditions or branch cut restrictions. The rigidity of this function space, together with a few other conditions, allows one to...

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  11. 48. Correlators in N=4 SYM at weak and strong coupling
    Paul Heslop (Durham University)
    05/09/2018, 15:30

    I will give an overview of what is known about 4 point correlators of half BPS operators in N=4 SYM both at weak and strong coupling. At weak coupling - in the planar limit - the integrands are known explicitly to 10 loops and give combinations of amplitude integrands at any number of points. It is conjectured that all information needed to extract all n-point l-loop amplitudes is contained in...

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  12. 49. Soft limits and Asymptotic Symmetries
    Tristan McLoughlin (Trinity College Dublin)
    05/09/2018, 16:45
  13. 50. Direct Solutions of IBP Systems
    David Kosower (CEA Saclay)
    06/09/2018, 09:30

    In this talk, I present recent work on solving integration-by-parts (IBP) systems for simplifying Feynman integrals. I'll give a brief review of IBP, and also review the idea of generating vectors which block-diagonalize IBP systems. I then present recent work on conjugate polynomials, which fully diagonalize such systems. I also present an application to generating recurrence relations for...

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  14. 51. QCD splitting functions and cusp anomalous dimensions at four loops
    Sven Moch (Universität Hamburg)
    06/09/2018, 10:15
  15. 52. Gravity Amplitudes and General Relativity
    Emil Bjerrum-Bohr (NBI Copenhagen)
    06/09/2018, 11:30

    We will discuss the treatment of general relativity as an effective field theory and discuss recent progress for computation. We will use results for amplitudes to derive theoretical predictions in general relativity.

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  16. 53. Form factors from N=4 SYM to Higgs+gluon amplitudes
    Andreas Brandhuber (Queen Mary University of London)
    06/09/2018, 12:15
  17. 43. Volker Schomerus (DESY)
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