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Journal Article

Light clocks in strong gravitational fields

MPS-Authors
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Schuller,  Frederic P.
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Fulltext (public)

0902.1811v1.pdf
(Preprint), 136KB

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Citation

Punzi, R., Schuller, F. P., & Wohlfarth, M. N. R. (n.d.). Light clocks in strong gravitational fields. Retrieved from http://lanl.arxiv.org/abs/0902.1811.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-604C-7
Abstract
We argue that the time measured by a light clock operating with photons rather than classical light requires a refinement of the standard clock postulate in general relativity. In the presence of a gravitational field, already the one-loop quantum corrections to classical Maxwell theory affect light propagation and the construction of observers' frames of reference. Carefully taking into account these kinematic effects, a concise geometric expression for the time shown by a light clock is obtained. This result has far-reaching implications for physics in strong gravitational fields.