Relativity of spatial scale and of the Hubble flow: The logical foundations of relativity and cosmology

Relativity on Rotated Graph Paper

Relativity theory does not imply that the future already exists: a counterexample

Relativity theory of clocks and rulers

Relativity without relativity

Relaxation dominated cosmological expansion

Relaxation dynamics of charged gravitational collapse

Relaxation versus collision times in the cosmological radiative era

Relaxed Bounds on the Dilaton Mass in a String Cosmology Scenario

Relaxing a large cosmological constant in the astrophysical domain

Relaxing the Cosmological Constraints on Unparticle Dark Component

Relevance of Induced Gauge Interactions in Decoherence

Reliability of complete gravitational waveform models for compact binary coalescences

Relic dilatons in string cosmology

Relic Gravitational Waves and Cosmology

Relic Gravitational Waves and Limits on Inflation

Relic gravitational waves and the cosmic accelerated expansion

Relic gravitational waves and the generalized second law

Relic Gravitational Waves and Their Detection

Relic gravitational waves from colliding bubbles and cosmic turbulence