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Journal Article

One loop photon-graviton mixing in an electromagnetic field: Part 1

MPS-Authors

Schubert,  Christian
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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0412095[1].pdf
(Preprint), 236KB

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Citation

Bastianelli, F., & Schubert, C. (2005). One loop photon-graviton mixing in an electromagnetic field: Part 1. Journal of High Energy Physics, 2005(2): 069.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-4F5E-1
Abstract
Photon-graviton mixing in an electromagnetic field is a process of potential interest for cosmology and astrophysics. At the tree level it has been studied by many authors. We consider the one-loop contribution to this amplitude involving a charged spin 0 or spin 1/2 particle in the loop and an arbitrary constant field. In the first part of this article, the worldline formalism is used to obtain a compact two-parameter integral representation for this amplitude, valid for arbitrary photon energies and background field strengths. The calculation is manifestly covariant througout.