Novel Developments in Scattering Amplitudes

11 Jul 2022, 08:00 → 5 Aug 2022, 17:00 Europe/Berlin

MIAPbP

Monday 11 July

14:30 → 15:00 Welcome to MIAPbP

Tuesday 12 July

10:30 → 12:00 Scattering Amplitudes at the conformal fixed point

Speakers: Dima Chicherin, Simone Zoia

Chicherin_Slides.pdf

Zoia_Slides.pdf

Wednesday 13 July

10:30 → 12:00 Pushforwards via Scattering Equations with Applications to Positive Geometries

Recently it has become apparent that there is a close connection between two modern descriptions of scattering amplitudes, the CHY formalism and the framework of positive geometries. This connection is facilitated by calculatingpushforwards through the scattering equations. To further investigate this remarkable connection, we develop tools to calculate these pushforwards without the need to explicitly solve the scattering equations. Our results use techniques from computational algebraic geometry. (Based on [2206.14196]).

Speaker: Jonah Stalknecht

Thursday 14 July

10:30 → 12:00 On amplitude soft bootstrap methods

Abstract: We know that infrared dynamics is connected with symmetry. We usually assume that the symmetry is considered primary and the corresponding properties as soft theorems are only secondary. I will demonstrate how fruitful can be the opposite perspective. A brief discussion on the classification of "interesting" theories using the so-called soft bootstrap methods will be given. It comprises theories such as NLSM, DBI, BI, Galileons, and their combinations as scalar-galileon and extended DBI.

Speaker: Karol Kampf

18:00 → 20:00 BBQ

Monday 18 July

14:15 → 14:45 Welcome to MIAPbP

14:45 → 16:30 (Dual) Surfacehedra and All Loop Scattering Amplitudes

Meeting-ID: 623 6399 0014
Kenncode: 876549
https://tum-conf.zoom.us/s/62363990014

Speakers: Meeting-ID: 623 6399 0014 Kenncode: 876549, Nima Arkani-Hamed

Zoom Link

19:00 → 22:00 What holds the world together?

Prof. Nima Arkani-Hamed, world-renowned theoretical physicist from the Institute for Advanced Study (IAS), Princeton, and Prof. Armin Nassehi, famous sociologist from LMU München, give answers to this question – and a glimpse into the future of science. First Arkani-Hamed will give an insight into the evolution of fundamental physics by presenting „The end of space-time“. Nassehi will then bring the social systems into the game. He and Arkani-Hamed will discuss their answers concerning the physical and the social universe as well as their views about science and its role for society.
You’ll find all details and registration here:
https://www.mpp.mpg.de/en/physics-for-everyone/what-holds-the-world-together

Speaker: https://www.mpp.mpg.de/en/physics-for-everyone/what-holds-the-world-together

Tuesday 19 July

10:30 → 12:00 TBA

Speaker: Giulio Salvatori

Wednesday 20 July

10:30 → 12:00 Antipodal Duality in Action at Eight Loops

I describe a new duality which relates the MHV 6-point scattering amplitude to the 3-point form factor of the chiral stress tensor operator in planar N=4 super-Yang-Mills theory. A bizarre aspect of the duality is its reversal of the order of letters in the symbol (the antipode map). The duality also features a kinematic map from the parity-invariant slice of 6-point kinematics to full form factor kinematics which swaps the role of soft and collinear limits. The form factor was known to 8 loops, one loop order higher than the MHV 6-point amplitude. So we can exploit the duality to determine the amplitude at 8 loops, by lifting its symbol off the parity-invariant surface and completing it to a function. The unique result obtained passes all the usual tests, providing additional evidence for antipodal duality (if you didn’t think 7 loops was enough).

Speaker: Lance Dixon

Thursday 21 July

10:30 → 12:00 Vector Spaces of Generalized Euler Integrals

We study vector spaces associated to a family of generalized Euler integrals, as which also Feynman integrals can be understood. Those vector spaces have been investigated using tools from homological algebra and the theory of D-modules. The methods are ranging from Bernstein-Sato operators to de Rham cohomology up to hypergeometric systems. Based on ongoing work with Daniele Agostini, Claudia Fevola, and Simon Telen, I present an overview, discuss relations between these approaches, and present new algorithmic tools.

Speaker: Anna-Laura Sattelberger

18:00 → 20:30 Bavarian Brotzeit

Friday 22 July

10:30 → 12:00 Symbology for elliptic Feynman integrals and scattering amplitudes

Speaker: Matthias Wilhelm

Wilhelm_Abstract.pdf

Monday 25 July

14:30 → 15:00 Welcome to MIAPbP

Tuesday 26 July

10:30 → 12:00 What is the iε for the S-matrix?

Speaker: Hofie Hannesdottir

Hannesdottir_Abstract.pdf

Wednesday 27 July

06:30 → 15:30 Daytrip to Umweltforschungsstation Schneefernerhaus with scientific exchange

Thursday 28 July

10:30 → 12:00 Unitarity Cuts of the Worldsheet

Speaker: Sebastian Mizera

Mizera_Slides.pdf

17:30 → 19:30 BBQ

Tuesday 2 August

10:30 → 12:00 Uncovering Features of Celestial Amplitudes

Speaker: Yangrui Hu

Hu_Abstract.pdf

Hu_Slides.pdf

Wednesday 3 August

10:30 → 12:00 Perturbative unitarity in expanding universes and non-convex polytopes

Speaker: Paolo Benincasa

Thursday 4 August

10:30 → 12:00 The cusp anomalous dimension of ABJM from an integrability approach

Speaker: Martin Lagares

17:00 → 18:30 Bavarian Brotzeit