California Amplitudes Meeting 2026

California Amplitudes Meeting

 

QMAP, UC Davis, May 30-31, 2026

The meeting will be held in the space of the Center for Quantum Mathematics and Physics (QMAP). The focus is on various topic in scattering amplitudes and recent developments. It is mainly aimed at researchers located in California.

Practicalities:

All talks will be in the QMAP seminar room (3rd floor). Lunches and coffee breaks will be in the kitchen area on the 2nd floor. Saturday afternoon is devoted to discussions. There is free evening on Saturday (we will then go for dinner at 6:00pm in downtown Davis in multiple groups). The QMAP doors are closed on the weekends, so if you are coming late or need to come back during the day, then call/text Melvyn (530-220-7088), Justin (619-977-3589) or Umut (510-396-9794).

Schedule:

The workshop starts on Saturday, May 30 at 10:00 with the welcome and the first talk. Breakfast and coffee will be served around 9:00 to welcome people. Same on Sunday morning (talks start 9:45). The workshop will end on Sunday, May 31, 2:00pm after the lunch. All talks are 25+5 minutes, the gong show talks are shorter 5+3 minutes.

Saturday  Sunday 
9:00-10:00Arrival/Breakfast 9:00-9:45Breakfast
10:00-10:15Welcome remarks 9:45-10:15Ruf
10:15-10:45Dixon 10:15-10:45Oktem
10:45-11:30Coffee 10:45-11:30Coffee
11:30-12:00Herrmann 11:30-12:00Pratt
12:00-12:30Saavedra 12:00-12:30Bern / Closing remarks
12:30-2:00Lunch 12:30-2:00Lunch
2:00-3:30Gong show   
3:30-5:30Discussion + Coffee   
6:00Dinner   

Talks:

  1. Zvi Bern: Closing remarks (AI for amplitudes)
  2. Lance Dixon: It’s All About the Basis; No Trouble
  3. Enrico Herrmann: TBD
  4. Umut Oktem: Multi-Loop Negative Geometries
  5. Lizzie Pratt: Hypertree Divisors from On-shell Diagrams
  6. Michael Ruf: TBD
  7. Michael Saavedra: Resumming the Post-Minkowski Expansion at High Energies

Gong show

  1. Artyom Lisitsyn: Computing on-shell diagram numerators
  2. Avery Jackman: Classical Gravitational Scattering from the Ultraviolet
  3. Calvin Chen: Two-loop graviton amplitudes in anomaly-free gravity with chiral matter
  4. Gareth Mansfield: Yang-Mills Lagrangian Manifesting Color-Kinematics Duality
  5. Hsing-Yi Lai: Symmetry Constrains and Magnetic Monopoles
  6. Marcelo dos Santos: Combinatorics of the scaffolded superstring
  7. Melvyn Nabavi: Uplifting Feynman Integrals To Logarithmic Forms
  8. Samuel Degen: Gravitational Drag from Phonon Emission
  9. Justin Lemmon: Tree-Level Gravity Amplitudes at Infinity
  10. Lihang Zhou: Calculus of Relational Observables in Perturbative Gravity

List of participants:

  1. Marcelo Augusto Ferreira dos Santos (UC Davis)
  2. Sumit Banik (Stanford/SLAC)
  3. Zvi Bern (UCLA)
  4. Francesco Calisto (Caltech)
  5. Calvin Chen (UCLA)
  6. Samuel Degen (UCLA)
  7. Lance Dixon (Stanford/SLAC)
  8. Enrico Herrmann (UCLA)
  9. Atakan Hilmi Firat (UC Davis)
  10. Anjie Gao (Stanford/SLAC)
  11. Xin Guan (Stanford/SLAC)
  12. Avery Jackman (UCLA)
  13. Callum Jones (Arizona)
  14. Hsing-Yi Lai (UC Davis)
  15. Justin Lemmon (UC Davis)
  16. Artyom Lisitsyn (UC Davis)
  17. Gareth Mansfield (UCLA)
  18. Melvyn Nabavi (UC Davis)
  19. Umut Oktem (UC Davis)
  20. Lizzie Pratt (UC Davis)
  21. Michael Ruf (Stanford/SLAC)
  22. Michael Saavedra (UCLA)
  23. Jaroslav Trnka (UC Davis)
  24. Lihang Zhou (Caltech)