What question did this study set out to answer?

The aim is to find observable 2f harmonic clock signatures predicted by a disformal scalar theory.

March 12, 2026Open Access

Searches for a Disformal Scalar 2f Clock Signature in GNSS, GPS, and Pulsar-Timing Data

Puntos clave

The aim is to find observable 2f harmonic clock signatures predicted by a disformal scalar theory.
Analyzed GNSS, GPS, and pulsar-timing data for 2f harmonic signals.
Derived observable based on conformal-plus-disformal scalar effective field theory (EFT).
Estimated optical-clock projection under specific assumptions.
No evidence for the 2f harmonic clock signature was found in the analyzed data.
Provided quantitative bounds contingent on scalar field's relationship with local dark matter density.

Resumen

Preprint on a conformal-plus-disformal scalar EFT predicting a 2f harmonic clock signature alongside the usual 1f signal. The paper derives the observable, reports null searches in GNSS, GPS, and pulsar-timing data, and gives an optical-clock projection under stated assumptions. Quantitative bounds are conditional on the scalar field saturating the local dark matter density.

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