Talks and seminars
The lists below were last updated October 2024.
Conference talks
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- Amplitudes and Combinatorics Synergy Event
- Invited lecture “What is a Feynman integral?”
- Princeton, NJ, USA (October 2024)
- Institute for Advanced Study
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- Celestial Holography Summer School 2024
- Invited series of lectures “Scattering Amplitudes and Time Machines”
- Waterloo, ON, Canada (July 2024)
- Perimeter Institute for Theoretical Physics
- Videos
-
- S-Matrix Bootstrap 2024 Workshop
- Discussion session “Status of analyticity”
- Reykjavik, Iceland (June 2024)
- University of Iceland
-
- Conference “Spacetime and String Theory”
- Invited talk “String amplitudes: Dotting the i’s and curling the ε’s”
- Santa Barbara, CA, USA (April 2024)
- Kavli Institute for Theoretical Physics, UC Santa Barbara
- Slides, video
-
- Conference “Positive Geometry in Particle Physics and Cosmology”
- Invited talk “Dos and don’ts of folding time “
- Leipzig, Germany (February 2024)
- Max Planck Institute for Mathematics in the Sciences
- Slides
-
- Workshop “QCD Meets EW”
- Invited talk “Landau Singularities Revisited”
- Geneva, Switzerland (February 2024)
- CERN
-
- S-Matrix Bootstrap V Workshop
- Discussion session “Do Androids Dream of Schrödinger’s Cats?
- Les Diablerets, Switzerland (August 2023)
- SwissMAP Research Station
-
- Conference “From Amplitudes to Gravitational Waves”
- Invited review talk “Formal aspects of scattering amplitudes: Lessons and challenges in 2023”
- Stockholm, Sweden (July 2023)
- Nordic Institute for Theoretical Physics
- Slides
-
- Strings 2023
- Panel discussion “The Future of the S-Matrix”
- Waterloo, ON, Canada (July 2023)
- Perimeter Institute for Theoretical Physics
- Slides
-
- RADCOR 2023: 16th International Symposium on Radiative Corrections
- Invited talk “Landau Singularities Revisited”
- Crieff, United Kingdom (May 2023)
- Higgs Centre School of Theoretical Physics, University of Edinburgh
- Slides
-
- Higgs Centre School of Theoretical Physics 2023
- Invited series of lectures “Physics of the Analytic S-Matrix”
- Edinburgh, United Kingdom (May 2023)
- Higgs Centre School of Theoretical Physics, University of Edinburgh
- Lecture notes, videos
-
- Workshop “Tropical and Convex Geometry and Feynman integrals”
- Invited talk “Tropical Geometry of IR Divergences”
- Zurich, Switzerland (September 2022)
- Institute for Theoretical Studies, ETH Zurich
-
- Amplitudes 2022 Conference
- Invited talk “Three things we’ve learned about infrared divergences this year”
- Prague, Czech Republic (August 2022)
- Charles University
- Slides
-
- Conference “Bohr-100: Current Themes in Theoretical Physics”
- Invited talk “Unitarity Cuts of the Worldsheet”
- Copenhagen, Denmark (August 2022)
- Niels Bohr International Academy, University of Copenhagen
- Slides
-
- MIAPbP Workshop “Novel Developments in Scattering Amplitudes”
- Invited talk “Unitarity Cuts of the Worldsheet”
- Garching, Germany (July 2022)
- Munich Institute for Astro-, Particle and BioPhysics
-
- Workshop on Nonlinear Algebra and Combinatorics from Physics
- Invited talk “Feynman Polytopes”
- Cambridge, MA, USA (April 2022)
- CMSA, Harvard University
-
- S-matrix Bootstrap IV Workshop
- Invited talk “What is the $i\varepsilon$ for the S-matrix?”
- Heraklion, Crete, Greece (April 2022)
-
- Workshop “YOUNGST@RS – Rebuilding the Tower of Babel”
- Invited talk “Double-copy and unitarity of tree-level string amplitudes”
- Mainz, Germany (April 2022) via Zoom
- Mainz Institute for Theoretical Physics, Johannes Gutenberg University
- Slides
-
- 2022 Chennai-Southampton Workshop
- Invited talk “What is the $i\varepsilon$ for the S-matrix?”
- Southampton, UK (March 2022) via Zoom
- STAG Research Centre, Southampton University and Center for Strings, Gravitation and Cosmology, IIT Madras
- Slides
-
- Elliptics ‘21 Conference
- Invited talk “Landau Discriminants”
- Uppsala, Sweden (October 2021) via Zoom
- Uppsala University
- Slides
-
- DESY Theory Workshop “Bright ideas for a dark universe”
- Invited parallel talk “Landau Discriminants”
- Hamburg, Germany (September 2021) via Zoom
- Deutsches Elektronen-Synchrotron (DESY)
- Slides
-
- Workshop on Celestial Amplitudes and Flat Space Holography
- Panel discussion on celestial amplitudes
- Corfu, Greece (September 2021) via Zoom
- European Institute for Sciences and their Applications
- Slides, video
-
- Amplitudes 2021 Conference
- Invited talk “Crossing”
- Copenhagen, Denmark (August 2021) via Zoom
- Niels Bohr Institute, University of Copenhagen
- Slides, video
-
- Strings 2021 Conference
- Invited talk “Subtle Points About Saddle Points in the S-Matrix Theory”
- São Paulo, Brazil (June 2021) via Zoom
- ICTP South American Institute for Fundamental Research
- Slides, video
-
- “Positive Geometries in Scattering Amplitudes and Beyond” Workshop
- Invited talk “Tropical Realizations of the Wilsonian Paradigm”
- Mainz, Germany (June 2021) via Zoom
- Mainz Institute for Theoretical Physics, Johannes Gutenberg University
- Slides
-
- “California Amplitudes Meeting 2021” Workshop
- Invited talk “Progress on Crossing Symmetry”
- Los Angeles, CA, USA (March 2021) via Zoom
- University of California, Los Angeles
- Notes
-
- “Geomplitudes II” Workshop
- Invited talk “Stasheff Polytopes, Cosmology, and the Ising Model”
- Davis, CA, USA (February 2021) via Zoom
- QMAP, University of California, Davis
- Notes
-
- “QCD Meets Gravity VI” Workshop
- Invited talk “Do position-space observables double copy?”
- Evanston, IL, USA (November 2020) via Zoom
- Northwestern University
- Notes
-
- “Scattering Amplitudes and Beyond” Online Reunion Conference
- Invited talk “The Sandwich Model”
- Santa Barbara, CA, USA (August 2020) via Zoom
- Kavli Institute for Theoretical Physics, UC Santa Barbara
- DOI, notes, video
-
- “Recent Developments in S-matrix theory” Conference
- Invited talk “From Moduli Space Localization to AdS Amplitudes”
- Bangalore, India (July 2020) via Zoom
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research
- Notes, video
-
- Amplitudes 2020 Conference
- Invited talk “Towards the Geometric Color-Kinematics Duality”
- Providence, RI, USA (May 2020) via Zoom
- Brown University
- Slides, video
-
- “stringtheory.pl/2019” Conference
- Invited talk “Kinematic Jacobi Identity is a Residue Theorem”
- Kraków, Poland (December 2019)
- Jagiellonian University
-
- “MathemAmplitudes 2019: Intersection Theory & Feynman Integrals” Conference
- Invited talk “Status of Intersection Theory and Feynman Integrals”
- Padova, Italy (December 2019)
- University of Padova
- Slides
-
- Spacetime and Quantum Mechanics Master Class Workshop
- Invited series of lectures “Aspects of Scattering Amplitudes and Moduli Space Localization”
- Cambridge, MA, USA (October 2019)
- Center of Mathematical Sciences and Applications, Harvard University
- Videos
-
- “String Field Theory and String Perturbation Theory” Conference
- Invited talk “Scattering Amplitudes from Intersection Theory”
- Florence, Italy (May 2019)
- Galileo Galilei Institute for Theoretical Physics
- Video
-
- Amplitudes 2018 Conference
- Invited talk “Intersections”
- Menlo Park, CA, USA (June 2018)
- SLAC National Accelerator Laboratory, Stanford University
- Slides, video
-
- “New Directions in Conventional and Ambitwistor String Theories” Workshop
- Invited talk “Scattering Amplitudes as Intersection Pairings of Twisted Cohomology Groups”
- Waterloo, ON, Canada (April 2018)
- Perimeter Institute for Theoretical Physics
-
- “QCD Meets Gravity” Workshop
- Invited talk “KLT Relations from Intersection Theory”
- Los Angeles, CA, USA (December 2018)
- Mani L. Bhaumik Institute for Theoretical Physics, UCLA
- Slides
-
- Amplitudes 2017 Summer School
- Contributed talk “Combinatorics and Topology of Kawai–Lewellen–Tye Relations”
- Edinburgh, UK (July 2017)
- Higgs Centre, University of Edinburgh
- Slides, video
-
- “Infrared Problems in QED and Quantum Gravity” Workshop
- Invited talk “Soft Theorems from Riemann Spheres”
- Waterloo, ON, Canada (December 2016)
- Perimeter Institute for Theoretical Physics
Invited seminars
- Theory Colloquium, CERN, Geneva, Switzerland (February 2024)
- Colloquium, Perimeter Institute for Theoretical Physics, Waterloo, ON, Canada (January 2024)
- Theory Seminar, Department of Physics, Columbia University, New York, NY, USA (January 2024)
- IAS Amplitudes Group Meeting, Princeton, NJ, USA (November 2023)
- High Energy Physics Seminar, Department of Physics, City College of New York, New York, NY, USA (November 2023)
- Theory Seminar, Department of Physics, Columbia University, New York, NY, USA (November 2023)
- Particle Theory Seminar, Department of Physics, Yale University, New Haven, CT, USA (September 2023)
- Nuclear and Particle Theory Seminar, Center for Theoretical Physics, MIT, Cambridge, MA, USA (September 2023)
- Seminar on Nonlinear Algebra, Max Planck Institute for Mathematics in the Sciences, Leipzig, Germany (July 2023)
- Lectures on Scattering, Max Planck Institute for Mathematics in the Sciences, Leipzig, Germany (July 2023)
- String Theory Seminar, Mathematical Institute, University of Oxford, Oxford, UK (June 2023)
- Cosmology Journal Club, Department of Applied Mathematics and Theoretical Physics (DAMTP), University of Cambridge, Cambridge, UK (June 2023)
- AnLy Strings & Fields seminar, LAPTh Annecy and University of Lyon, Annecy, France (April 2023) via Zoom
- Theoretical High Energy Seminar, McGill University, Montreal, QC, Canada (March 2023) [Slides]
- Worldliners meeting, Online (November 2022) via Teams
- Physics Mini-Symposium, University of Michigan, Ann Arbor, MI, USA (October 2022) [Slides]
- String Theory Seminar, DESY, Hamburg, Germany (October 2022) via Zoom [Slides]
- Particle Theory Seminar, Kadanoff Center for Theoretical Physics, University of Chicago, Chicago, IL, USA (October 2022) via Zoom
- IAS Amplitudes Group Meeting, Princeton, NJ, USA (October 2022)
- TH-Colloquium, CERN, Geneva, Switzerland (April 2022)
- Scattering amplitudes journal club at the Max Planck Institute for Physics, Munich, Germany (April 2022) via Zoom
- EPP Theory Seminar, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, CA, USA (April 2022) via Zoom [Slides]
- Amplitudes @ Padova seminar, University of Padova, Padova, Italy (April 2022) via Zoom
- Geometry, Algebra, Physics Seminar, Department of Mathematics, Penn State University, State College, PA, USA (March 2022) via Zoom
- Quantum Fields and Strings Seminar, Department of Applied Mathematics and Theoretical Physics (DAMTP), University of Cambridge, Cambridge, UK (February 2022) via Zoom
- TEP Seminar, Mani L. Bhaumik Institute for Theoretical Physics, UCLA, Los Angeles, CA, USA (February 2022) via Zoom
- Quantum Encounters Seminar, Institut des Hautes Études Scientifiques (IHÉS), Bures-sur-Yvette, France (November 2021) via Zoom
- Fields, Strings, Gravity Seminar, Center for Quantum Mathematics and Physics, University of California, Davis, CA, USA (September 2021) via Zoom
- Quantum Spacetime Seminar Series, Tata Institute of Fundamental Research, Mumbai, India (August 2021) via Zoom
- Online seminar on motives and period integrals in quantum field theory and string theory, Paris, France (May 2021) via Zoom [Notes]
- Simons Bootstrap Collaboration Seminar, Stony Brook, NY, USA (May 2021) via Zoom [Video]
- Quantum Fields and Strings seminar, Perimeter Institute, Waterloo, ON, Canada (May 2021) via Zoom [Video]
- Journal club, Centro de Física do Porto, University of Porto, Portugal (April 2021) via Zoom
- Theory seminar, National Institute for Subatomic Physics (Nikhef), Amsterdam, Netherlands (March 2021) via Zoom [Notes, video]
- High Energy Theory Seminar, California Institute of Technology, Pasadena, CA, USA (February 2021) via Zoom
- Joint Theory Seminar, Niels Bohr International Academy, University of Copenhagen, Copenhagen, Denmark (February 2021) via Zoom
- Maths HEP Lunchtime Seminar, Centre for Particle Theory, Department of Mathematical Sciences, Durham University, Durham, UK (November 2020) via Zoom [Notes]
- Geometry and scattering amplitudes journal club, Arnold Sommerfeld Center for Theoretical Physics, LMU Munich, Munich, Germany (November 2020) via Zoom
- Physics group meeting, Institute for Advanced Study, Princeton, NJ, USA (November 2020) via Zoom
- HET Seminar, Leinweber Center for Theoretical Physics, University of Michigan, Ann Arbor, MI, USA (October 2020) via Zoom
- McGill HEP Zoom Talk, McGill University, Montreal, QC, Canada (May 2020) via Zoom
- Journal club talk, Mani L. Bhaumik Institute for Theoretical Physics, UCLA, Los Angeles, CA, USA (February 2020)
- EPP Theory Seminar, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, CA, USA (February 2020)
- HET Seminar, Mitchell Institute, Texas A&M University, College Station, TX, USA (February 2020) [Video]
- Quantum Field and String Theory Group seminar, Humboldt University, Berlin, Germany (December 2019)
- HET Seminar, New High Energy Theory Center, Rutgers University, Piscataway, NJ, USA (November 2019) [Video]
- High Energy Theory Seminar, Institute for Advanced Study, Princeton, NJ, USA (September 2019)
- Relativity Seminar, Mathematical Institute, University of Oxford, Oxford, UK (August 2019)
- Journal club talk, Centre for Research in String Theory, Queen Mary University of London, London, UK (August 2019)
- TH String Theory Seminar, CERN, Geneva, Switzerland (April 2019)
- Theoretical Physics Group seminar, University of Padova, Padova, Italy (May 2019)
- Theoretical High Energy Seminar, McGill University, Montreal, QC, Canada (February 2019)
- Fields, Strings, Gravity Seminar, Center for Quantum Mathematics and Physics, University of California, Davis, CA, USA (January 2019)
- Quantum Fields and Strings group meeting, Perimeter Institute for Theoretical Physics, Waterloo, ON, Canada (September 2018)
- HET Seminar, Niels Bohr International Academy, University of Copenhagen, Copenhagen, Denmark (September 2018)
- Informal HET Seminar, Institute for Advanced Study, Princeton, NJ, USA (May 2018)
- Fields, Strings, Gravity Seminar, Center for Quantum Mathematics and Physics, University of California, Davis, CA, USA (February 2018)
- Quantum Fields and Strings group meeting, Perimeter Institute for Theoretical Physics, Waterloo, ON, Canada (March 2017)