A R Prasanna and Subhendra Mohanty 2003 Class. Quantum Grav. 20 3023 doi:10.1088/0264-9381/20/14/304
A R Prasanna and Subhendra Mohanty
Show affiliationsWe study interactions of electromagnetic fields with the curvature tensor of the form λRμναβFμνFαβ. Such coupling terms, though invariant under general coordinate transformation and CPT, violate the Einstein equivalence principle. These couplings do not cause any energy-dependent dispersion of photons but they exhibit birefringence. We put constraints on the coupling constant λ using results from solar system radar ranging experiments and millisecond-pulsar observations. We find that the most stringent constraint comes from pulsar observations and is given by λ < 1011 cm2 obtained from the timing of binary pulsar PSR B1534+12.
04.40.Nr Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or classical fields
11.30.Er Charge conjugation, parity, time reversal, and other discrete symmetries
04.25.-g Approximation methods; equations of motion
04.20.Fy Canonical formalism, Lagrangians, and variational principles
Issue 14 (21 July 2003)
Received 7 January 2003
Published 18 June 2003
A R Prasanna and Subhendra Mohanty 2003 Class. Quantum Grav. 20 3023
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