Hidden Structures in Field Theory Amplitudes 2009

12 Aug 2009, 08:00 → 14 Aug 2009, 18:00 Europe/Copenhagen

Auditorium A (Niels Bohr International Academy)

Rutger Boels (Niels Bohr International Academy)

This was the second small informal workshop at the Niels Bohr International Academy centered on recent developments in amplitude calculations in field theory in a broad sense of the word. The focus was on exchanging ideas about the structural aspects of these and lessons that can be drawn from them. The Niels Bohr International Academy is a part of the Niels Bohr Institute which aims to extend the long tradition of outstanding research in theoretical physics in Copenhagen. See here for the presentations at the workshop. See here for the poster of the workshop. See here for the workshop photo of the participants.

Speakers included

Zvi Bern		(UCLA)
James Drummond		(LAPTH, Annecy)
David Dunbar		(Swansea)
Andrew Hodges		(Oxford)
Paul Howe		(King's College, University of London)
Gregory Korchemsky		(Orsay & Saclay)
David Kosower		(Saclay)
Carlos Mafra		(AEI, Potsdam)
Poul Olesen		(NBIA)
Radu Roiban		(Penn State)
Marcus Spradlin		(Brown)
Gabriele Travaglini		(Queen Mary, University of London)
Pierre Vanhove		(IHES & Saclay)

All this in the hope of winning bottles of wine, (This bottle of wine was presented at the workshop dinner to Zvi Bern by Paul Howe. This settles a bet between them about finiteness of a four loop correction in maximal supergravity.)

pictures DSC02535_(Small).JPG Foto of all workshop participants, taken by Andy Jackson

Poster CopenhagenAmplitudesWorkshop.pdf

Slides

• BernTalk.pptx
• BroedelTalk.pdf
• CarrascoTalk.pdf
• DrummondTalk.pdf
• DunbarTalk.ppt
• HeslopTalk.pdf
• HodgesTalk.pdf
• HoweTalk.ppsx
• JohanssonTalk.pdf
• KorchemskyTalk.pdf
• KosowerTalk.ppt
• MafraTalk.pdf
• OlesenTalk.pdf
• RoibanTalk.pdf
• SpradlinTalk.pdf
• TravagliniTalk.pdf
• VanhoveTalk.pdf

Wednesday 12 August

09:50 → 10:00 Opening remarks, various practical details

Opening of the workshop

Speaker: Organizers

10:00 → 10:30 Hidden Structures in Field Theory Amplitudes and Applications

Speaker: Zvi Bern (UCLA)

10:30 → 11:00 QCD Scattering Amplitudes from Wilson loops

Speaker: Poul Olesen (NBIA)

11:00 → 11:30 break

11:30 → 12:30 On-Shell Meets Observation

Speaker: David Kosower (Saclay)

12:30 → 14:00 Lunch!

14:00 → 15:00 Supersymmetric gauge and gravity theories: from loop calculations to non-perturbative states

Speaker: Radu Roiban (Penn state)

15:00 → 15:30 Non-Planar N=4 SYM at Four Loops and Supersum Structures

Speaker: Henrik Johansson (Saclay)

15:30 → 16:00 break

16:00 → 17:00 Niels Bohr and his institute

Speaker: Finn Aaserud (Niels Bohr Archive)

Thursday 13 August

09:30 → 10:30 Yangian symmetry of scattering amplitudes in N=4 SYM

Speaker: James Drummond (LAPTH, Annecy)

10:30 → 11:00 Emergent twistor geometry in scattering amplitudes

Speaker: Andrew Hodges (Wadham College, University of Oxford)

11:00 → 11:30 break

11:30 → 12:30 Symmetries of scattering amplitudes in N=4 SYM

Speaker: Gregory Korchemsky (Orsay & Saclay)

12:30 → 14:00 Lunch!

14:00 → 15:00 Loops, Legs and Twistors

Speaker: Marcus Spradlin (Brown)

15:00 → 15:30 N=8 Supergravity at Four Loops

Speaker: John Joseph Carrasco (UCLA)

15:30 → 16:00 break

16:00 → 17:00 A journey through three maximally supersymmetric theories

Speaker: Gabriele Travaglini (Queen Mary, University of London)

17:00 → 17:30 Computing amplitudes using Wilson loops

Speaker: Paul Heslop (Queen Mary, University of London)

19:00 → 21:00 Workshop Dinner

Friday 14 August

09:30 → 10:30 Counterterms and cohomology

Speaker: Paul Howe (King's College, University of London)

10:30 → 11:00 Pure spinor superspace and superstring scattering amplitudes

Speaker: Carlos Mafra (Albert Einstein Institute, Golm)

11:00 → 11:30 break

11:30 → 12:30 Structure of gauge and gravity amplitudes in string and field theory

Speaker: Pierre Vanhove (IHES & Saclay)

12:30 → 14:00 Lunch!

14:00 → 15:00 Unitarity Methods in Quantum Field Theory

Speaker: David Dunbar (Swansea)

15:00 → 15:30 R^4 counterterm and E_7 symmetry in maximal supergravity

Speaker: Johannes Broedel (AEI Potsdam & Hannover)

15:30 → 16:00 break