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, April 20, 2026 (9:00 AM) to Wednesday, April 22, 2026 (5:30 PM)

Monday, April 20, 2026

9:00 AM Welcome: Carlos Tamarit
Carlos Tamarit
9:00 AM - 9:15 AM

9:15 AM Geometric, algebraic and analytic structures in scattering amplitudes: Johannes Broedel
Johannes Broedel
9:15 AM - 10:15 AM

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

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

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

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

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

12:30 PM Lunch Break
Lunch Break
12:30 PM - 2:15 PM

2:15 PM Calabi Yau periods in string compactifications and beyond: Damian van de Heisteeg
Damian van de Heisteeg
2:15 PM - 3:00 PM

3:00 PM Numerical computation of periods: Eic Pichon-Pharabod
Eic Pichon-Pharabod
3:00 PM - 3:30 PM

3:30 PM Break
Break
3:30 PM - 4:00 PM

4:00 PM Appearances of Calabi-Yau periods in classical gravitational observables: Benjamin Sauer
Benjamin Sauer
4:00 PM - 4:30 PM

4:30 PM New algorithms for Feynman integral reduction and epsilon-factorised differential equations: Prof. Stefan Weinzierl
Prof. Stefan Weinzierl
4:30 PM - 5:30 PM
Tuesday, April 21, 2026

9:15 AM Intersection Theory and String Amplitudes: Prof. Oliver Schlotterer
Prof. Oliver Schlotterer
9:15 AM - 10:15 AM

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

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

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

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

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

12:30 PM Lunch Break
Lunch Break
12:30 PM - 2:15 PM

2:15 PM An introduction to tree-level string scattering amplitudes: Chrysoula Markou
Chrysoula Markou
2:15 PM - 3:00 PM

3:00 PM Superstring amplitudes from the field-theory limit: an n-point map at one loop: Lecheng Ren
Lecheng Ren
3:00 PM - 3:30 PM

3:30 PM Break
Break
3:30 PM - 4:00 PM

4:00 PM One-Loop string amplitudes exactly in \alpha’: Marco Baccianti
Marco Baccianti
4:00 PM - 4:30 PM

4:30 PM String Amplitudes and Twisted Co(homology): Prof. Stephan Stieberger
Prof. Stephan Stieberger
4:30 PM - 5:30 PM
Wednesday, April 22, 2026

9:00 AM From Loops to Gravitational Waves: A Journey through the Integral Landscape: Prof. Radu Roiban
Prof. Radu Roiban
9:00 AM - 10:00 AM

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

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

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

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

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

12:30 PM Lunch Break
Lunch Break
12:30 PM - 2:15 PM

2:15 PM Introduction to D-modules: Kostiantyn Tolmachov
Kostiantyn Tolmachov
2:15 PM - 3:00 PM

3:00 PM D modules and singular expansions of Feynman integrals: Seva Chestnov
Seva Chestnov
3:00 PM - 3:30 PM

3:30 PM Break
Break
3:30 PM - 4:00 PM

4:00 PM D modules and integral reduction with CALICO: Gaia Fontana
Gaia Fontana
4:00 PM - 4:30 PM

4:30 PM Hidden Structures in Feynman Amplitudes: Complexity Theory and GKZ Reductions: Prof. Thomas Grimm
Prof. Thomas Grimm
4:30 PM - 5:30 PM

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