Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-05-30
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
Scientific paper
The late-time accelerated expansion of the universe could be caused by a scalar field that is screened on small scales, as in chameleon or symmetron scenarios. We present an analogy between thin shell configurations of such scalar fields and electrostatics, which allows calculation of the field profile for general extended bodies. Interestingly, the field demonstrates a `lightning rod' effect, where it becomes enhanced near the ends of a pointy or elongated object. Drawing from this correspondence, we show that non-spherical test bodies immersed in a background field will experience a net torque caused by the scalar field. This effect, with no counterpart in the gravitational case, can be potentially tested in future experiments.
Ferrer Francesc
Jones-Smith Katherine
No associations
LandOfFree
Detecting Chameleon Dark Energy via Electrostatic Analogy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Detecting Chameleon Dark Energy via Electrostatic Analogy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting Chameleon Dark Energy via Electrostatic Analogy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-679050