Speaker
Robin Fynn Diedrichs
(Goethe University Frankfurt)
Description
Theories beyond General Relativity typically contain at least one additional scalar degree of freedom, which effectively mediates an additional force. While this force must be highly suppressed in low-density environments--in order 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 scalar-tensor theories can be treated using an effective field theory approach and present results regarding observables such as the energy loss and the gravitational wave spectrum.
