Dark matter searches within the intercontinental optical atomic clock network

Wcisło, Piotr; Ablewski, P.; Beloy, K.; Bilicki, S.; Bober, Marcin; Brown, Richard Harvey; Fasano, R.; Ciuryło, R.; Hachisu, Hidekazu; Ido, T.; Lodewyck, Jérôme; Ludlow, Andrew D.; McGrew, William F.; Morzynski, P.; Nicolodi, Daniele; Schioppo, M.; Sekido, Mamoru; Targat, R. Le; Wolf, Peter; Zhang, X.; Zjawin, B.; Zawada, M.

doi:10.1109/eftf.2018.8409060

Cited by 2 publications

(3 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Earlier atomic clock searches focused on the “slow‐drift” model of fundamental constant variation and testing the coupling of fundamental constants to a changing gravitational potential . Recently, searches for oscillatory and transient variation of fundamental constants were proposed and implemented . Such new experiments directly relate to the major unexplained phenomena of our Universe, the nature of the dark matter.…”

Section: The Fundamental Constants and Atomic Clocksmentioning

confidence: 99%

See 1 more Smart Citation

The Search for Variation of Fundamental Constants with Clocks

Safronova

2019

Annalen der Physik

View full text Add to dashboard Cite

In many theories beyond the Standard Model the quantities that we call "fundamental constants" become space-time dependent, leading to corresponding variation of atomic and molecular spectra and clock frequencies. The extraordinary improvement of the atomic clock precision in the past fifteen years enabled testing the constancy of the fundamental constant at a very high level of precision. Herein, searches for the variation of fundamental constants with clocks are discussed, focusing on recent key results and future proposals, including highly charged ion, molecular, and nuclear clocks. The relevance of the recent searches for oscillatory and transient variation of fundamental constants to the major unexplained phenomena of our Universe, the nature of dark matter, is discussed.where e is the elementary charge, = h/2 is the reduced Planck constant, and ⑀ 0 is the electric constant. Actual determination of the fundamental constants and derived quantities is a vast and difficult endeavor involving many physics fields. [2] While the very definition of the label "constants" implies that these are fixed quantities, in many theories beyond the Standard Model they become dynamical (i.e., varying). [3,4] For

show abstract

Section: The Fundamental Constants and Atomic Clocksmentioning

confidence: 99%

“…Significantly improved constraints on the DM‐SM couplings were reported in ref. [] with the first earth‐scale quantum sensor network based on optical atomic clocks aimed at DM detection.…”

Section: Proposals For Future Clocks With Large Sensitivity To Variatmentioning

confidence: 99%

The Search for Variation of Fundamental Constants with Clocks

Safronova

2019

Annalen der Physik

View full text Add to dashboard Cite

show abstract

“…The precision of optical atomic clocks based on trapped ions [1,2] and neutral atoms [3][4][5] is making rapid progress, with estimated systematic uncertainties now routinely lower than those of the most accurate Cs fountains [6][7][8]. As well as potentially supporting time scales [9][10][11][12] and a future redefinition of the SI second [13,14], optical clocks are also promising tools for geodesy [15,16] and for carrying out tests of fundamental physics including violations of relativity [17][18][19], signatures of dark matter [20,21], or time variation of fundamental constants [22,23].…”

Section: Introductionmentioning

confidence: 99%

A strontium optical lattice clock with $1 \times 10^{-17}$ uncertainty and measurement of its absolute frequency

Hobson,

Bowden,

Silva

et al. 2020

Preprint

View full text Add to dashboard Cite

We present a measurement of the absolute frequency of the 5s 2 1 S 0 to 5s5p 3 P 0 transition in 87 Sr, which is a secondary representation of the SI second. We describe the optical lattice clock apparatus used for the measurement, and we focus in detail on how its systematic frequency shifts are evaluated with a total fractional uncertainty of 1 × 10 −17 . Traceability to the International System of Units is provided via comparison to International Atomic Time (TAI). Gathering data over 5-and 15-day periods, with the lattice clock operating on average 74% of the time, we measure the frequency of the transition to be 429 228 004 229 873.1(5) Hz, which corresponds to a fractional uncertainty of 1 × 10 −15 . We describe in detail how this uncertainty arises from the intermediate steps linking the optical frequency standard, through our local time scale UTC(NPL), to an ensemble of primary and secondary frequency standards which steer TAI. The calculated absolute frequency of the transition is in good agreement with recent measurements carried out in other laboratories around the world.

show abstract

Dark matter searches within the intercontinental optical atomic clock network

Cited by 2 publications

References 26 publications

The Search for Variation of Fundamental Constants with Clocks

The Search for Variation of Fundamental Constants with Clocks

A strontium optical lattice clock with $1 \times 10^{-17}$ uncertainty and measurement of its absolute frequency

Contact Info

Product

Resources

About