Hidden Structures in Field Theory Amplitudes

10 Sept 2008, 08:00 → 12 Sept 2008, 18:00 Europe/Copenhagen

Auditorium A (Niels Bohr International Academy)

This was a small informal workshop 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 workshop took place at the Niels Bohr International Academy, a newly formed entity at the Niels Bohr Institute, located in the recently refurbished Nordita building. PDF-files for almost all the talks can be found here. The workshop photo can be found here. The website for the 2009 workshop can be found here.

Speakers

Nima Arkani-Hamed (IAS) Simon Badger (Saclay) Paolo Benincasa (Perimeter Institute and CPT, Durham) Emil Bjerrum-Bohr (IAS) Paul Heslop (Queen Mary, University of London) Henrik Johansson (UCLA) Riccardo Ricci (Imperial College) David Skinner (Mathematical Institute, Oxford) Marcus Spradlin (Brown University) Pierre Vanhove (Saclay) All this in the spirit of these gentlemen,

pictures ConferencePhoto

Slides

• DavidSkinner.pdf
• EmilBjerrumBohr.pdf
• HenrikJohansson.pdf
• MarcusSpradlin.pdf
• PaoloBenincasa.pdf
• PaulHeslop.pdf
• PierreVanhove.pdf
• RiccardoRicci.pdf
• SimonBadger.pdf

Wednesday, 10 September

09:00 Coffee&tea

1 Welcome, practicalities

Speaker: Dr Organizers

2 No-triangle Hypothesis and Maximal Supergravity

Speaker: Dr Emil Bjerrum-Bohr (IAS)

3 Maximal Supersymmetry and Higher loop Amplitudes in Supergravity

Speaker: Dr Pierre Vanhove (Saclay)

11:00 Coffee&tea

4 A new identity for gauge theory amplitudes

Speaker: Henrik Johansson (UCLA)

5 D-dimensional unitarity cuts and extraction of rational terms

Speaker: Dr Simon Badger (Saclay)

12:30 LUNCH!

6 History of science lecture on Niels Bohr and his Institute

Speaker: Dr Finn Aaserud (Niels Bohr Archive)

7 Tour of Niels Bohr's Office and the Niels Bohr Archive

Speaker: Felicity Pors (Niels Bohr Archive)

15:30 Coffee&tea

Thursday, 11 September

09:00 Coffee&tea

8 Wilson loops, amplitudes and dual superconformal symmetry

Speaker: Dr Paul Heslop (Queen Mary College)

9 Leading singularities of gravity amplitudes

Speaker: Dr Paolo Benincasa (Perimeter Institute and CPT, Durham)

10:45 Coffee&tea

10 "Locality vs Simplicity"

Speaker: Prof. Nima Arkani-Hamed (IAS)

12:30 LUNCH!

11 Faculty of Science Colloquium: Fundamental Physics and the Large Hadron Collider

With the turn-on of the Large Hadron Collider (LHC) this fall, fundamental physics is on the verge of entering its most exciting era in a generation. The LHC is the biggest experiment in history, in all senses of the word. The machine is a circular ring with a 28 km circumference, in which two beams of protons are accelerated in opposite directions, to speeds approaching 0.99999999 times the speed of light. They are then made to collide with each other, giving us a window into the laws of Nature at 10^(-17) cm, 1000 times smaller than the atomic nucleus, 10 times smaller the tiniest distances we have probed to date. There are strong arguments that dramatic new physical principles await us at these distances. The LHC could extend our usual notions of spacetime by detecting "supersymmetry" or extra dimensions of space, and could directly produce the particles that constitute the Dark Matter of the Universe. In this talk I will describe these ideas, and discuss the solid things we will be able to say about them by the early years of the next decade.

Speaker: Prof. Nima Arkani-Hamed (IAS)

18:00 Workshop Dinner

Friday, 12 September

09:00 Coffee&tea

12 Multiloop Amplitudes and AdS/CFT

Speaker: Prof. Marcus Spradlin (Brown University)

10:45 Coffee&tea

13 Gravity, Twistors and the MHV Formalism

Speaker: Dr David Skinner (Mathematical Institute, Oxford)

14 Dual superconformal symmetry from AdS_5*S^5

Speaker: Dr Riccardo Ricci (Imperial College)

12:30 LUNCH!