SAGEX Closing Meeting

21 Jun 2022, 09:00 → 24 Jun 2022, 14:30 Europe/London

G. O. Jones lecture theatre, G.O. Jones Building (Queen Mary University of London)

This is the webpage for the celebratory final meeting of the European Commission Innovative Training Network SAGEX (Scattering Amplitudes: from Geometry to Experiment). 

The workshop will consist of research presentations by academic members of the network (Tuesday-Thursday), presentations by our industrial partners (Friday) and the final meeting of the SAGEX Supervisory Board.

Organisers: 

Andi Brandhuber, Jenna Lane, Ricardo Monteiro, Mary Thomas, Gabriele Travaglini, Congkao Wen, Chris White

Confirmed speakers:

Nima Arkani-Hamed (IAS, Princeton)
Zvi Bern (UCLA)
Emil Bjerrum-Bohr (NBI)
Johannes Bluemlein (DESY)
Andi Brandhuber (QMUL)
Ruth Britto (Trinity College Dublin)
John Joseph Carrasco (Northwestern University and CEA Saclay)
Lance Dixon (SLAC)
Patrick Dorey (Durham University)
Paul Heslop (Durham University)
David Kosower (CEA Saclay)
Lionel Mason (University of Oxford)
Tristan McLoughlin (Trinity College Dublin)
Sven-Olaf Moch (University of Hamburg)
Georgios Papathanasiou (DESY)
Jan Plefka (Humboldt University Berlin)
Carsten Schneider (RISC)
Matthias Staudacher (Humboldt University Berlin)
Gabriele Travaglini (QMUL)

Funding:

This workshop is funded by the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 764850 "SAGEX".

 

Tuesday, 21 June

09:30 → 10:00 Registration

10:00 → 10:10 Welcome from Head of School (via zoom)

Speaker: Peter Hobson (QMUL)

Peter Hobson.mp4

10:10 → 10:50 Talk 1: The (squared) amplituhedron and its boundary structure

Speaker: Paul Heslop

Paul Heslop.mp4

T1-Heslop_SAGEX_closing.pdf

10:50 → 11:30 Coffee

11:30 → 12:10 Talk 2: Hidden geometry in two-dimensional scattering

Speaker: Patrick Dorey (Durham University)

T2-Dorey.pdf

12:10 → 12:50 Talk 3: Classical Gravitational Scattering from a Gauge-Invariant Double Copy

Speaker: Andreas Brandhuber (Queen Mary University of London)

T3-Brandhuber.pdf

12:50 → 14:20 Lunch

14:20 → 15:00 Talk 4: Computer Algebra and Special Function Algorithms for Feynman Integrals

Speaker: Carsten Schneider (Johannes Kepler University Linz)

Carsten Schneider.mp4

T4-Carsten Schneider.pdf

15:00 → 15:40 Talk 5: Graviton particle statistics and coherent states from classical scattering amplitudes

Speaker: Ruth Britto

Ruth Britto.mp4

T5-Britto.pdf

15:40 → 16:15 Coffee

16:15 → 16:55 Talk 6: Applications of Scattering Amplitudes to Gravitational Waves (via Zoom)

Speaker: Zvi Bern (University of California Los Angeles (US))

T6-Zvi Bern.pdf

17:15 → 19:00 Wine Reception

Wednesday, 22 June

10:00 → 10:40 Talk 7: Amplitude Singularities from Cluster Algebras and Tropical Geometry

Speaker: Georgios Papathanasiou

Georgios Papathanasiou.mp4

T7-Papathanasiou.pdf

10:40 → 11:10 Coffee

11:10 → 11:50 Talk 8: Waveforms from Amplitudes

Speaker: David Kosower (CEA-Saclay)

David Kosower.mp4

David Kosower.pdf

11:50 → 12:30 Talk 9: The Integrable Hypereclectic Spin Chain

Speaker: Matthias Staudacher (Max-Planck-Institut fuer Gravitationsphysik)

Matthias Staudacher.mp4

T9-Matthias Staudacher.pdf

12:30 → 12:45 SAGEX Network group photograph

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terrace1.jpg

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terrace3.jpeg

12:45 → 14:00 Lunch

14:00 → 14:40 Talk 10: Higher order corrections in QCD and Gravity (via Zoom)

Speaker: Johannes Bluemlein

Johannes Blumlein.mp4

T10-Blumlein.pdf

14:40 → 15:20 Talk 11: Novel bootstraps leveraging the duality between color and kinematics (via Zoom)

Speaker: John Joseph Carrasco

JJ Carrasco.mp4

JJ Carrasco.pdf

15:20 → 16:15 Coffee

16:15 → 18:00 Colloquium: Spacetime, Quantum Mechanics and Scattering Amplitudes

Speaker: Nima Arkani-Hamed (IAS)

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Thursday, 23 June

10:00 → 10:40 Talk 12: Explicit gravity amplitudes on self-dual backgrounds

We give formulae for all tree-level graviton scattering amplitudes in curved self-dual radiative space-times; these are chiral, source-free, asymptotically flat spaces determined by free characteristic data at null infinity. Such space-times admit an elegant description in terms of twistor theory, which manifests their underlying integrability. The tree-level S-matrix is written in terms of an integral over the moduli space of holomorphic maps from the Riemann sphere to twistor space, with the degree of the map corresponding to the helicity configuration of the external gravitons. For the MHV sector, the amplitude formula is derived directly from general relativity, while the others arise from ambitwistor-strings. The amplitudes exhibit novel features that are absent in Minkowski space, including back-scattering and tail effects. Our formulae have many fewer integrals than expected from space-time perturbation theory. In special cases, such as self-dual plane waves, the formulae become particularly explicit with few residual integrals. This is joint work with Tim Adamo and Atul Sharma, arxiv:2203.02238 and 2103.16984.

Speaker: Lionel Mason

Lionel Mason.mp4

T12-Mason.pdf

10:40 → 11:20 Coffee

11:20 → 12:00 Talk 13: Celestial Holography for Asymptotically Flat Geometries

Speaker: Tristan McLoughlin

T13-McLoughlin.pdf

Tristan McLoughlin.mp4

12:00 → 12:40 Talk 14: Gravitational Dynamics from Scattering Amplitudes

Speaker: Emil Bjerrum-Bohr

Bjerrum-Bohr.pdf

Emil Bjerrum Bohr.mp4

12:40 → 14:10 Lunch

14:10 → 14:50 Talk 15: Classical gravitational scattering from a worldline quantum field theory

Speaker: Jan Plefka

Jan Plefka.mp4

T15-Plefka.pdf

14:50 → 15:30 Talk 16: From conformal symmetries and integrability to the Electron-Ion Collider

Speaker: Sven Olaf Moch

Sven-Olaf Moch.mp4

T16-Moch.pdf

15:30 → 16:10 Coffee

16:10 → 16:50 Talk 17: An Antipodal Duality Between Amplitudes and Form Factors (via Zoom)

Speaker: Lance Dixon

Lance Dixon.mp4

T17-Dixon.pdf

17:00 → 18:00 SAGEX film screening, with Introduction by Ekaterina Eremenko

19:30 → 22:30 Network Dinner

Friday, 24 June

09:30 → 09:40 Bertram Sabrowsky-Hirsch (RISC Software GmbH)

09:30 → 10:20 Industry Partner talks

09:40 → 09:50 Devendra Kapadia (Wolfram)

Industry - WolframSagexPartnership.pdf

09:50 → 10:00 Jürgen Gerhard (Maplesoft)

10:00 → 10:10 Nicolas Meric (DreamQuark)

10:10 → 10:20 Susanne Milde & Sascha Rieger (Milde Marketing)

10:20 → 10:50 SAGEX...and beyond

Speaker: Gabriele Travaglini

10:50 → 11:10 Coffee

11:10 → 12:40 Supervisory Board Meeting

12:40 → 14:00 BBQ