Extracting dark matter signatures from atomic clock stability measurements

Kalaydzhyan, Tigran; Yu, Nan

doi:10.1103/physrevd.96.075007

Cited by 27 publications

(44 citation statements)

References 44 publications

(93 reference statements)

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“…The coupling to proton and neutron is then induced from their binding energy [39]. Several groups set constraints on such a dilaton from the fine structure constant oscillations in atomic frequency comparisons [40][41][42]. These results are based on the time evolution of the scalar field that oscillates within its self-potential.…”

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confidence: 99%

MICROSCOPE Mission: First Constraints on the Violation of the Weak Equivalence Principle by a Light Scalar Dilaton

et al. 2018

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The existence of a light or massive scalar field with a coupling to matter weaker than gravitational strength is a possible source of violation of the weak equivalence principle. We use the first results on the Eötvös parameter by the MICROSCOPE experiment to set new constraints on such scalar fields. For a massive scalar field of mass smaller than 10^{-12} eV (i.e., range larger than a few 10^{5} m), we improve existing constraints by one order of magnitude to |α|<10^{-11} if the scalar field couples to the baryon number and to |α|<10^{-12} if the scalar field couples to the difference between the baryon and the lepton numbers. We also consider a model describing the coupling of a generic dilaton to the standard matter fields with five parameters, for a light field: We find that, for masses smaller than 10^{-12} eV, the constraints on the dilaton coupling parameters are improved by one order of magnitude compared to previous equivalence principle tests.

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confidence: 99%

MICROSCOPE Mission: First Constraints on the Violation of the Weak Equivalence Principle by a Light Scalar Dilaton

et al. 2018

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“…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%

“…Such oscillation signal would be detectible with atomic clocks for a large range of DM masses and interaction strengths . Transient changes in fundamental constants that are potentially detectable with networks of clocks may be induced by the dark matter objects with large spatial extent, such as stable topological defects …”

Section: The Fundamental Constants and Atomic Clocksmentioning

confidence: 99%

The Search for Variation of Fundamental Constants with Clocks

Safronova

2019

Annalen der Physik

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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

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“…However, if the total energy density is distributed over a range of frequencies, then the limits summarized in Ref. [6] will be significantly reduced. Therefore, it makes sense to put limits not only on the DM couplings, but also on the spectrum of DM excitations.…”

Section: Introductionmentioning

confidence: 99%

Searching for Stochastic Background of Ultra-Light Fields with Atomic Sensors

Kalaydzhyan

2018

Universe

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We propose a cross-correlation method for the searches of ultra-light fields, in particular, with a space network of atomic sensors. The main motivation of the approach is cancellation of uncorrelated noises in the observation data and unique pattern the fields leave on the cross-spectrum, depending on their nature (i.e., scalar, vector or tensor). In particular, we analytically derive a dependence of the cross-spectrum on the angle between two pairs of detectors. We then confirm obtained angular curves with a numerical simulation. We apply the method to the detection of dark matter and gravitational waves.

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Extracting dark matter signatures from atomic clock stability measurements

Cited by 27 publications

References 44 publications

MICROSCOPE Mission: First Constraints on the Violation of the Weak Equivalence Principle by a Light Scalar Dilaton

MICROSCOPE Mission: First Constraints on the Violation of the Weak Equivalence Principle by a Light Scalar Dilaton

The Search for Variation of Fundamental Constants with Clocks

Searching for Stochastic Background of Ultra-Light Fields with Atomic Sensors

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