Robin Fynn Diedrichs (University of Hannover)

Gravitational Waveforms of Compact Binaries in Scalar-Tensor Theories from Effective Field Theory

Theories beyond General Relativity typically contain at least one additional scalar degree of freedom, effectively mediating an additional force. While this force must be highly suppressed in low-density environments to pass current constraints, it generically leads to deviations from General Relativity in high-density / high-curvature environments, such as neutron stars and black holes, and thus impacts their observables. I will discuss how binary systems in theories that feature such a fifth force can be treated using an effective field theory approach and present results regarding observables such as the power loss and the gravitational wave signal. [link]

Place: KIAA Shu Qi Meeting Room

Time: Wednesday, May 27, 2026 - 3:30PM