95 citations · 386 across the 15 of their papers we have counts for
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Comment on "No-go theorem for bimetric gravity with positive and negative mass"
Sabine Hossenfelder
Authors Hohmann and Wohlfarth have put forward a no-go theorem for bimetric gravity with positive and negative mass in arXiv:0908.3384v1 [gr-qc]. This comment shows that their no-g…
A Bi-Metric Theory with Exchange Symmetry
S. Hossenfelder
We propose an extension of General Relativity with two different metrics. To each metric we define a Levi-Cevita connection and a curvature tensor. We then consider two types of fi…
Deformed Special Relativity in Position Space
S. Hossenfelder
We investigate how deformations of special relativity in momentum space can be extended to position space in a consistent way, such that the dimensionless contraction between wave-…
Cosmological Consequences of Anti-gravitation
S. Hossenfelder
The dynamics of a universe with an anti-gravitating contribution to the matter content is examined. The modified Friedmann equations are derived, and it is shown that anti-gravitat…
Anti-Gravitation
S. Hossenfelder
The possibility of a symmetry between gravitating and anti-gravitating particles is examined. The properties of the anti-gravitating fields are defined by their behavior under gene…
Particle production in time-dependent gravitational fields: the expanding mass shell
Sabine Hossenfelder, Dominik J. Schwarz, Walter Greiner
We compute the production of particles from the gravitational field of an expanding mass shell. Contrary to the situation of Hawking radiation and the production of cosmological pe…