Constraint Relaxation

Constraint rescaling in refined algebraic quantisation: momentum constraint

Constraint violation in free evolution schemes: comparing BSSNOK with a conformal decomposition of Z4

Constraint-preserving boundary conditions in numerical relativity

Constraint-preserving boundary conditions in the 3+1 first-order approach

Constraint-preserving boundary conditions in the Z4 Numerical Relativity formalism

Constraint-preserving boundary treatment for a harmonic formulation of the Einstein equations

Constraint-preserving Sommerfeld conditions for the harmonic Einstein equations

Constraints Algebra and Equations of Motion in Bohmian Interpretation of Quantum Gravity

Constraints and evolution in cosmology

Constraints and gauge transformations: Dirac's theorem is not always valid

Constraints and Reality Conditions in the Ashtekar Formulation of General Relativity

Constraints and Solutions of Quantum Gravity in Metric Representation

Constraints from Inflation on Scalar-Tensor Gravity Theories

Constraints from orbital motions around the Earth of the environmental fifth-force hypothesis for the OPERA superluminal neutrino phenomenology

Constraints in Quantum Geometrodynamics

Constraints on $f(R_{ijkl}R^{ijkl})$ gravity: An evidence against the covariant resolution of the Pioneer anomaly

Constraints on a new alternative model to dark energy

Constraints on alternative models to dark energy

Constraints on Area Variables in Regge Calculus