Gravitational birefringence of light at cosmological scales
Christian Duval, Thomas Schucker
TL;DR
This paper explores the theoretical possibility that the expanding universe's gravitational field could induce birefringence in light, extending previous electromagnetic birefringence concepts to a cosmological context.
Contribution
It introduces the idea that gravitational fields of the universe may cause birefringence, a novel extension of electromagnetic birefringence phenomena to cosmology.
Findings
Theoretical prediction of gravitational birefringence at cosmological scales
Extension of electromagnetic birefringence concepts to gravitational fields
Potential implications for observations of light from distant sources
Abstract
Birefringence of light induced not by matter, but by the gradient of an electric field, has been predicted in 1955 and observed in 2008. Here we replace the electric field by the gravitional field of our expanding universe.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Cosmology and Gravitation Theories