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4 papers · 2 filters
Decomposition of geometric perturbations
Roman V. Buniy, Thomas W. Kephart
For an infinitesimal deformation of a Riemannian manifold, we prove that the scalar, vector, and tensor modes in decompositions of perturbations of the metric tensor, the scalar cu…
Prospects for Large Relativity Violations in Matter-Gravity Couplings
Alan Kostelecky, Jay Tasson
Deviations from relativity are tightly constrained by numerous experiments. A class of unmeasured and potentially large violations is presented that can be tested in the laboratory…
A variational formulation of relativistic hydrodynamics
Nikodem J. Poplawski
We combine Taub's and Ray's variational approaches to relativistic hydrodynamics of perfect fluids into another simple formulation.
Variational formulation of Eisenhart's unified theory
Nikodem J. Poplawski
Eisenhart's classical unified field theory is based on a non-Riemannian affine connection related to the covariant derivative of the electromagnetic field tensor. The sourceless fi…