Observables in 3-dimensional quantum gravity and topological invariants

Observables in 3d spinfoam quantum gravity with fermions

Observables in a Noncommutative Unification of Quanta and Gravity. A Final Model

Observables in classical canonical gravity: folklore demystified

Observables in Extended Percolation Models of Causal Set Cosmology

Observables in quantum gravity

Observables of D=4 Euclidean Supergravity and Dirac Eigenvalues

Observables of the Euclidean Supergravity

Observables, gauge invariance, and the role of the observers in the limit from general relativity to special relativity

Observation of critical phenomena and self-similarity in the gravitational collapse of radiation fluid

Observation of Incipient Black Holes and the Information Loss Problem

Observation of negative-frequency waves in a water tank: A classical analogue to the Hawking effect?

Observation of the Final Boundary Condition: Extragalactic Background Radiation and the Time symmetry of the Universe

Observation of Three Mode Parametric Interactions in Long Optical Cavities

Observation results by the TAMA300 detector on gravitational wave bursts from stellar-core collapses

Observational consequences of a dark interaction model

Observational constrains on the DGP brane-world model with a Gauss-Bonnet term in the bulk

Observational constraints in scalar tensor theory with tachyonic potential

Observational constraints of a power spectrum from super-inflation in Loop Quantum Cosmology

Observational constraints on $f(T)$ theory