# Pulsar Timing Constraints on Physics Beyond the Standard Model

@article{Afshordi2017PulsarTC, title={Pulsar Timing Constraints on Physics Beyond the Standard Model}, author={N. Afshordi and H. Kim and E. Nelson}, journal={arXiv: High Energy Physics - Theory}, year={2017} }

We argue that massive quantum fields source low-frequency long-wavelength metric fluctuations through the quantum fluctuations of their stress-energy, given reasonable assumptions about the analytic structure of its correlators. This can be traced back to the non-local nature of the gauge symmetry in General Relativity, which prevents an efficient screening of UV scales (what we call the cosmological non-constant problem). We define a covariant and gauge-invariant observable which probes line… CONTINUE READING

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