Effect of VSR invariant Chern-Simons Lagrangian on photon polarization

Journal Article · Wed Jul 01 00:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/07/031· OSTI ID:22525714

Nayak, Alekha C.; Verma, Ravindra K.; Jain, Pankaj ^[1]

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1. Department of Physics, Indian institute of Technology, Kanpur, 208016 (India)

We propose a generalization of the Chern-Simons (CS) Lagrangian which is invariant under the SIM(2) transformations but not under the full Lorentz group. The generalized lagrangian is also invariant under a SIM(2) gauge transformation. We study the effect of such a term on radiation propagating over cosmological distances. We find that the dominant effect of this term is to produce circular polarization as radiation propagates through space. We use the circular polarization data from distant radio sources in order to impose a limit on this term.

• OSTI ID: 22525714
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 07; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COSMIC RAY PROPAGATION
COSMOLOGY
DISTANCE
GAUGE INVARIANCE
LAGRANGIAN FUNCTION
LORENTZ GROUPS
PHOTONS
POLARIZATION
SPACE
TRANSFORMATIONS