Correlated signals of ultralight scalar dark matter in pulsar timing

arXiv:2607.24912 · astro-ph.CO, gr-qc, hep-ph · Submitted 2026-07-27 · Read on arXiv

Joshua W. Foster, Kimberly K. Boddy, Jeff A. Dror, Vincent S. H. Lee, Andrea Mitridate, Tristan L. Smith, Kelsie Taylor, Tanner Trickle

astro-ph.CO, gr-qc, hep-ph

Submitted: 2026-07-27

Comments: 33 pages, 14 figures, 2 tables

Code: https://github.com/nanograv/PINT

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Coherence Length — 12× in this paper · explained in 2 episodes
• Normalizing Flow — 10× in this paper · explained in 3 episodes
• Bayesian Inference — 4× in this paper · explained in 5 episodes
• pulsar timing arrays — 4× in this paper · explained in 2 episodes
• Analyzer — 3× in this paper · explained in 1 episode
• Abundance — 2× in this paper · explained in 1 episode
• Accuracy — 2× in this paper · explained in 1 episode
• Fidelity — 2× in this paper · explained in 2 episodes
• Generative Model — 2× in this paper · explained in 2 episodes
• Normalizing Flows — 2× in this paper · explained in 4 episodes
• Adam — 1× in this paper · explained in 2 episodes
• National Science Foundation — 1× in this paper
• Robustness — 1× in this paper · explained in 5 episodes
• Standard Model — 1× in this paper
• Velocity Dispersion — 1× in this paper · explained in 2 episodes

Sources

• New Horizons: Scalar and Vector Ultralight Dark Matter
• Pulsar timing signal from ultralight scalar dark matter
• The String Dilaton and a Least Coupling Principle
• Violations of the equivalence principle in a dilaton-runaway scenario
• Dilaton as a Dark Matter Candidate and its Detection
• Equivalence Principle Violations and Couplings of a Light Dilaton
• Constraints on the Variations of the Fundamental Couplings
• Limits on the temporal variation of the fine structure constant, quark masses and strong interaction from quasar absorption spectra and atomic clock experiments
• Phenomenology of the Equivalence Principle with Light Scalars
• Search for ultralight scalar dark matter with atomic spectroscopy
• Searching for an oscillating massive scalar field as a dark matter candidate using atomic hyperfine frequency comparisons
• MICROSCOPE mission: first constraints on the violation of the weak equivalence principle by a light scalar dilaton
• Violation of the equivalence principle from light scalar dark matter
• First observation with global network of optical atomic clocks aimed for a dark matter detection
• Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons
• How fast can protons decay?
• Cosmological Constraints on a Dynamical Electron Mass
• Can dark matter induce cosmological evolution of the fundamental constants of Nature?
• BBN constraints on universally-coupled ultralight scalar dark matter
• Constraints on Ultralight Scalar Dark Matter with Quadratic Couplings

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