Milestones in Amplitudes for Gravitational Waves and Cosmology

Quantum field theory methods have proven themselves to be invaluable tools in many areas of physics, most recently in gravitational physics. "Milestones in Amplitudesfor Gravitational Waves to Cosmology" brings together experts in modern scattering amplitudes, higher-loop integration, and theoretical cosmology and aims to sharpen the theoretical framework required to fully exploit the potential of upcoming gravitational observations. The workshop will explore how on-shell methods, effective field theory, and advanced integral technology to deepen our understanding of classical gravity and how these same ideas propagate into inflationary correlators, and the structure of cosmological perturbations. With a mix of invited talks and ample time for discussion, the workshop aims to (i) map out the present state of the art, (ii) highlight key bottlenecks and (iii) seed new collaborations leveraging modern quantum field theory methods to address current problems in gravitational physics and cosmology.

Organizers: Charalampos Anastasiou (ETH Physics), Zvi Bern (UCLA), David Kosower (IPhT Saclay), Radu Roiban (ETH Institute for Theoretical Studies and Penn State University)

Supported by: This workshop is supported in part by the European Research Council (ERC) under the European Union’s research and innovation program grant agreement ERC-AdG-885414(‘Ampl2Einstein’) and the ETH Institute for Theoretical Studies (ETH-ITS).

Workshop location: ETH Main Building, Rämistrasse 101