The third edition of Theory@XFEL workshop will take place from 3rd to 5th of November 2026 in Lilleb>. The workshop will gather together theoreticians and experimentalists with physics, chemistry and biology backgrounds to discuss the state-of-the-art, future prospects and opportunities of theoretical simulations related to X-ray free electron lasers.

Scientific Committee:

• Miquel Huix-Rotllant, Institut de Chimie Radicalaire, Aix-Marseille University
• Marie Labeye, Chimie Physique et Chimie du Vivant, ENS PSL
• Andre Severo Pereira Gomes, Laboratoire de Physique des Lasers, Atomes et Molécules, Lille University
• Valérie Vallet, Laboratoire de Physique des Lasers, Atomes et Molécules, Lille University
• Pina Romaniello, Laboratoire de Physique Théorique, Toulouse University
• Nicolas Sisourat, Laboratoire de Chimie Physique Matière et Rayonnement, Sorbonne University