190 citations · 1k across the 15 of their papers we have counts for
15 papers
Spin on a 4D Feynman Checkerboard
Brendan Z. Foster, Ted Jacobson
We discretize the Weyl equation for a massless, spin-1/2 particle on a time-diagonal, hypercubic spacetime lattice with null faces. The amplitude for a step of right-handed chirali…
Phenomenology of Gravitational Aether as a solution to the Old Cosmological Constant Problem
Siavash Aslanbeigi, Georg Robbers, Brendan Z. Foster +2
One of the deepest and most long-standing mysteries in physics has been the huge discrepancy between the observed vacuum density and our expectations from theories of high energy p…
Constraints and gauge transformations: Dirac's theorem is not always valid
Julian Barbour, Brendan Z. Foster
A standard tenet of canonical quantum gravity is that evolution generated by a Hamiltonian constraint is just a gauge transformation on the phase space and therefore does not chang…
Strong field effects on binary systems in Einstein-aether theory
Brendan Z. Foster
"Einstein-aether" theory is a generally covariant theory of gravity containing a dynamical preferred frame. This article continues an examination of effects on the motion of binary…
Lorentz violation and perpetual motion
Christopher Eling, Brendan Z. Foster, Ted Jacobson +1
We show that any Lorentz violating theory with two or more propagation speeds is in conflict with the generalized second law of black hole thermodynamics. We do this by identifying…
Radiation Damping in Einstein-Aether Theory
Brendan Z. Foster
This work concerns the loss of energy of a material system due to gravitational radiation in Einstein-aether theory-an alternative theory of gravity in which the metric couples to…