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Scattering of tidally interacting bodies in post-Minkowskian gravity
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abstract
The post-Minkowskian approach to gravitationally interacting binary systems ({\it i.e.}, perturbation theory in $G$, without assuming small velocities) is extended to the computation of the dynamical effects induced by the tidal deformations of two extended bodies, such as neutron stars. Our derivation applies general properties of perturbed actions to the effective field theory description of tidally interacting bodies. We compute several tidal invariants (notably the integrated quadrupolar and octupolar actions) at the first post-Minkowskian order. The corresponding contributions to the scattering angle are derived.
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Cited by 2 Pith papers
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Dictionary revision for mapping boundary data to bound states
A revised boundary-to-bound dictionary, using p_inf^2 -> p_inf^2 e^(-i pi), makes fourth-order post-Minkowskian bound-orbit observables real and matches numerical relativity binding energies for mass ratios 1 and 10.
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Classical Black Hole Scattering to Celestial Amplitudes in Effective Theories of Gravity
A doctoral thesis reproduces the author's published post-Newtonian and post-Minkowskian two-body observables and celestial amplitudes in scalar-tensor, Chern-Simons, Einstein-Maxwell-dilaton, and quadratic gravity.
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