34 citations · 131 across the 6 of their papers we have counts for
6 papers
Gravity waves in parity-violating Copernican Universes
Stephon Alexander, Leah Jenks, Pavel Jiroušek +2
In recent work minimal theories allowing the variation of the cosmological constant by means of a balancing torsion, have been proposed. It was found that such theories contain par…
Parity violating Friedmann Universes
João Magueijo, Tom Złośnik
We revisit models, within the Einstein-Cartan theory, where the cosmological constant is promoted to a variable, at the cost of allowing for torsion even in the absence of spin…
The General Linear Cartan Khronon
Tomi Koivisto, Manuel Hohmann, Tom Złośnik
A Cartan geometry of the General Linear symmetry is formulated by dividing out the displacements from the group. The resulting action is quadratic in curvature, polynomial in all t…
Spacetime and dark matter from spontaneous breaking of Lorentz symmetry
Tom Złośnik, Federico Urban, Luca Marzola +1
It is shown that a spontaneously-broken gauge theory of the Lorentz group contains Ashtekar's chiral formulation of General Relativity accompanied by dust. From this perspective, g…
Cosmology of the Galileon extension of Bekenstein's theory of relativistic Modified Newtonian Dynamics
Thomas Złośnik, Constantinos Skordis
A generalization of Bekenstein's Tensor-Vector-Scalar (TeVeS) model of modified gravity has recently been proposed as an alternative to dark matter. This model -- which we will ref…
Cosmological signature change in Cartan Gravity with dynamical symmetry breaking
Joao Magueijo, Matias Rodriguez-Vazquez, Hans Westman +1
We investigate the possibility for classical metric signature change in a straightforward generalization of the first order formulation of gravity, dubbed "Cartan gravity". The mat…