3 papers
gr-qc2025
Nonlinear Gravitational Radiation Reaction: Failed Tail, Memories & Squares
Rafael A. Porto, Massimiliano M. Riva, Zixin Yang
Using the Schwinger-Keldysh "in-in" effective field theory (EFT) framework, we complete the knowledge of nonlinear gravitational radiation-reaction effects in the (relative) dynami…
gr-qc2024
Gravitational radiation from inspiralling compact binaries to NLO in the Effective Field Theory approach
Loris Amalberti, Zixin Yang, Rafael A. Porto
Within the context of the Effective Field Theory (EFT) framework to gravitational dynamics, we compute the Hamiltonian, source quadrupole moment, and gravitational-wave energy flux…
gr-qc2024
Multipole expansion at the level of the action in -dimensions
Loris Amalberti, François Larrouturou, Zixin Yang
In this paper we study the multipole expansion of the long-wavelength effective action for radiative sources in (+1) spacetime dimensions. We present detailed expressions for th…