Effects of short-distance modifications to general relativity in spinning binary systems

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Author(s):	Lins, Aline Nascimento ; Sturani, Riccardo Total Authors: 2
Document type:	Journal article
Source:	PHYSICAL REVIEW D; v. 103, n. 8, p. 23-pg., 2021-04-19.
Abstract
We investigate the possibility of testing short-distance modifications to general relativity via higher-curvature terms in the fundamental gravity Lagrangian by analyzing their impact on observations of spinning astronomical binary systems. By using effective field theory methods applied to the two-body problem, generic lower bounds on the short-distance scale accompanying high-curvature terms can be set. In particular, we extend known results by deriving spin-dependent effects in binding energy, radiation emission process, and spin precession equations in binary systems, which are the fundamental ingredients to observe spin-dependent effects in gravitational wave detections from compact binary coalescences and spin precession in double binary pulsars. (AU)

FAPESP's process:	16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:	Nathan Jacob Berkovits
Support Opportunities:	Special Projects