24–26 May 2021
University of Pittsburgh
US/Eastern timezone

Precision gravitational wave spin observables from EFT

25 May 2021, 16:45
15m
Cosmology Cosmology IV

Speaker

Brian Alan Pardo

Description

Computing sufficiently precise theoretical gravitational wave observables for realistic systems such as compact object binaries remains an essential and notoriously challenging task. In this talk, I will discuss a post-Newtonian effective field theory approach to this problem, focusing specifically on objects with spin. Using this framework, I will present new results at next-to-leading order and compare with those obtained using other formalisms for both spin-orbit and spin-spin contributions. In particular, we obtain the contribution of these effects to the orbital frequency and accumulated orbital phase as well as the adiabatic invariants and flux-balance laws. Importantly, this approach offers a straightforward path forward to systematically push the state-of-the-art to higher orders.

Primary authors

Brian Alan Pardo Gihyuk Cho (Deutsches Elektronen-Synchrotron DESY) Rafael Porto

Presentation materials