Reconstruction of inhomogeneous metric perturbations and electromagnetic four-potential in Kerr spacetime

Reconstruction of scalar field and tachyon potentials for closed cosmological models

Reconstruction of Scalar Potentials in Induced Gravity and Cosmology

Reconstruction of scalar potentials in two-field cosmological models

Reconstruction of source location in a network of gravitational wave interferometric detectors

Reconstruction of the equation of state for the cyclic universes in homogeneous and isotropic cosmology

Records Theory

Recovering a spinning inspiralling compact binary waveform immersed in LIGO-like noise with spinning templates

Recovering General Relativity from massive gravity

Recovering the effective cosmological constant in extended gravity theories

Recreating Fundamental Effects in the Laboratory?

Recurrence metrics and the physics of closed time-like curves

Recurrence relations for spin foam vertices

Red-shifts near black holes

Redshift Anomalies with Universal Free-Fall

Redshift propagation equations in the $β' \neq 0$ Szekeres models

Redshifts and Killing Vectors

Reduced basis catalogs for gravitational wave templates

Reduced Basis representations of multi-mode black hole ringdown gravitational waves

Reduced Hamiltonian for intersecting shells and Hawking radiation