91 citations · 453 across the 21 of their papers we have counts for
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Seiberg-Witten Map with Lorentz-Invariance and Gauge-Covariant Star Product
M. Chaichian, M. N. Mnatsakanova, M. Oksanen
We develop the Seiberg-Witten map using the gauge-covariant star product with the noncommutativity tensor . The latter guarantees the Lorentz invariance of the theory. T…
Sakharov's induced gravity and the Poincaré gauge theory
Masud Chaichian, Markku Oksanen, Anca Tureanu
We explore Sakharov's seminal idea that gravitational dynamics is induced by the quantum corrections from the matter sector. This was the starting point of the view that gravity ha…
On the canonical structure and extra mode of generalized unimodular gravity
Rodrigo Bufalo, Markku Oksanen
We consider a recently proposed generalization of unimodular gravity, where the lapse function is constrained to be equal to a function of the determinant of the spatial metric $f(…
BRST Quantization of Unimodular Gravity
S. Upadhyay, M. Oksanen, R. Bufalo
We study the quantization of two versions of unimodular gravity, namely, fully diffeomorphism-invariant unimodular gravity and unimodular gravity with fixed metric determinant util…
Mimetic dark matter, ghost instability and a mimetic tensor-vector-scalar gravity
Masud Chaichian, Josef Kluson, Markku Oksanen +1
Recently modified gravitational theories which mimic the behaviour of dark matter, the so-called "Mimetic Dark Matter", have been proposed. We study the consistency of such theorie…
Can TeVeS be a viable theory of gravity?
Masud Chaichian, Josef Kluson, Markku Oksanen +1
Among modified gravitational theories, the Tensor-Vector-Scalar (TeVeS) occupies a special place -- it is a covariant theory of gravity that produces the modified Newtonian dynamic…