English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We present a way to search for light scalar dark matter (DM), seeking toexploit putative coupling between dark matter scalar fields and fundamentalconstants, by searching for frequency modulations in direct comparisons betweenfrequency stable oscillators. Specifically we compare a Cryogenic SapphireOscillator (CSO), Hydrogen Maser (HM) atomic oscillator and a bulk acousticwave quartz oscillator (OCXO). This work includes the first calculation of thedependence of acoustic oscillators on variations of the fundamental constants,and demonstration that they can be a sensitive tool for scalar DM experiments.Results are presented based on 16 days of data in comparisons between the HMand OCXO, and 2 days of comparison between the OCXO and CSO. No evidence ofoscillating fundamental constants consistent with a coupling to scalar darkmatter is found, and instead limits on the strength of these couplings as afunction of the dark matter mass are determined. We constrain the dimensionlesscoupling constant $d_e$ and combination $|d_{m_e}-d_g|$ across the mass band$4.4\times10^{-19}\lesssim m_\varphi \lesssim 6.8\times10^{-14}\:\text{eV}c^{-2}$, with most sensitive limits $d_e\gtrsim1.59\times10^{-1}$,$|d_{m_e}-dg|\gtrsim6.97\times10^{-1}$. Notably, these limits do not rely onMaximum Reach Analysis (MRA), instead employing the more general coefficientseparation technique. This experiment paves the way for future, highlysensitive experiments based on state-of-the-art acoustic oscillators, and weshow that these limits can be competitive with the best current MRA-basedexclusion limits.

Searching for Scalar Dark Matter via Coupling to Fundamental Constants with Photonic, Atomic and Mechanical Oscillators