Name: YOUNGST@RS - Loops & Geometry: Hidden Structures in Multi-loop Amplitudes
Start: 2026-04-20T09:00:00+02:00
End: 2026-04-22T17:30:00+02:00
Location: Mainz Institute for Theoretical Physics, Johannes Gutenberg University

YOUNGST@RS - Loops & Geometry: Hidden Structures in Multi-loop Amplitudes

from Monday, 20 April 2026 (09:00) to Wednesday, 22 April 2026 (17:30)

Monday, 20 April 2026

09:00 Welcome: Carlos Tamarit
Carlos Tamarit
09:00 - 09:15

09:15 Geometric, algebraic and analytic structures in scattering amplitudes: Johannes Broedel
Johannes Broedel
09:15 - 10:15

10:15 Single-valued polylogarithms for all genera: Konstantin Baune
Konstantin Baune
10:15 - 10:45

10:45 Break
Break
10:45 - 11:00

11:00 Computational Algebraic Geometry for Feynman Integrals and Their Singularities: Claudia Fevola
Claudia Fevola
11:00 - 11:30

11:30 Feynman Integrals, Calabi-Yau Manifolds, and Abelian Curves: Pyry Kuusela
Pyry Kuusela
11:30 - 12:00

12:00 ε-Factorisation for Feynman Integrals in Higher Genus: Iris Bree
Iris Bree
12:00 - 12:30

12:30 Lunch Break
Lunch Break
12:30 - 14:15

14:15 Calabi Yau periods in string compactifications and beyond: Damian van de Heisteeg
Damian van de Heisteeg
14:15 - 15:00

15:00 Numerical computation of periods: Eic Pichon-Pharabod
Eic Pichon-Pharabod
15:00 - 15:30

15:30 Break
Break
15:30 - 16:00

16:00 Appearances of Calabi-Yau periods in classical gravitational observables: Benjamin Sauer
Benjamin Sauer
16:00 - 16:30

16:30 New algorithms for Feynman integral reduction and epsilon-factorised differential equations: Prof. Stefan Weinzierl
Prof. Stefan Weinzierl
16:30 - 17:30
Tuesday, 21 April 2026

09:15 Intersection Theory and String Amplitudes: Prof. Oliver Schlotterer
Prof. Oliver Schlotterer
09:15 - 10:15

10:15 Improving Integration-by-parts: Sid Smith
Sid Smith
10:15 - 10:45

10:45 Break
Break
10:45 - 11:00

11:00 Magic relations and critical varieties: Hjalte Frellesvig
Hjalte Frellesvig
11:00 - 11:30

11:30 The spectrum of Feynman integral geometries at two loops: Florian Raphael Seefeld
Florian Raphael Seefeld
11:30 - 12:00

12:00 Intersection theory and symmetry relations for Feynman integrals: Sara Maggio
Sara Maggio
12:00 - 12:30

12:30 Lunch Break
Lunch Break
12:30 - 14:15

14:15 An introduction to tree-level string scattering amplitudes: Chrysoula Markou
Chrysoula Markou
14:15 - 15:00

15:00 Superstring amplitudes from the field-theory limit: an n-point map at one loop: Lecheng Ren
Lecheng Ren
15:00 - 15:30

15:30 Break
Break
15:30 - 16:00

16:00 One-Loop string amplitudes exactly in \alpha’: Marco Baccianti
Marco Baccianti
16:00 - 16:30

16:30 String Amplitudes and Twisted Co(homology): Prof. Stephan Stieberger
Prof. Stephan Stieberger
16:30 - 17:30
Wednesday, 22 April 2026

09:00 From Loops to Gravitational Waves: A Journey through the Integral Landscape: Prof. Radu Roiban
Prof. Radu Roiban
09:00 - 10:00

10:00 Analytic structure of the Black Hole S-matrix: Anna M. Wolz
Anna M. Wolz
10:00 - 10:45

10:45 Break
Break
10:45 - 11:00

11:00 Magnusian Generating Function of Observables: Trevor Schoepner
Trevor Schoepner
11:00 - 11:30

11:30 Pushing the Post-Newtonian Frontier: Six Loops and Beyond: Giacomo Brunello
Giacomo Brunello
11:30 - 12:00

12:00 Waveforms at Infinity and at the Horizon: Carlo Heissenberg
Carlo Heissenberg
12:00 - 12:30

12:30 Lunch Break
Lunch Break
12:30 - 14:15

14:15 Introduction to D-modules: Kostiantyn Tolmachov
Kostiantyn Tolmachov
14:15 - 15:00

15:00 D modules and singular expansions of Feynman integrals: Seva Chestnov
Seva Chestnov
15:00 - 15:30

15:30 Break
Break
15:30 - 16:00

16:00 D modules and integral reduction with CALICO: Gaia Fontana
Gaia Fontana
16:00 - 16:30

16:30 Hidden Structures in Feynman Amplitudes: Complexity Theory and GKZ Reductions: Prof. Thomas Grimm
Prof. Thomas Grimm
16:30 - 17:30

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