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Open AccessJournal ArticleDOI

Search for New Physics with Atoms and Molecules

TLDR
In this article, the authors present a review of the application of atomic physics to address important challenges in physics and to look for variations in the fundamental constants, search for interactions beyond the standard model of particle physics and test the principles of general relativity.
Abstract
Advances in atomic physics, such as cooling and trapping of atoms and molecules and developments in frequency metrology, have added orders of magnitude to the precision of atom-based clocks and sensors. Applications extend beyond atomic physics and this article reviews using these new techniques to address important challenges in physics and to look for variations in the fundamental constants, search for interactions beyond the standard model of particle physics, and test the principles of general relativity.

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Journal Article

The Observation of Gravitational Waves from a Binary Black Hole Merger

TL;DR: The first direct detection of gravitational waves and the first observation of a binary black hole merger were reported in this paper, with a false alarm rate estimated to be less than 1 event per 203,000 years, equivalent to a significance greater than 5.1σ.
Journal ArticleDOI

^{27}Al^{+} Quantum-Logic Clock with a Systematic Uncertainty below 10^{-18}.

TL;DR: In this article, an optical atomic clock based on quantum-logic spectroscopy of the S 0↔ −3 P 0 transition in Al −+ was proposed, with a systematic uncertainty of 9.4×10 −19 and a frequency stability of 1.2×10−15 −15/sqrt[τ].
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20 years of developments in optical frequency comb technology and applications

TL;DR: This review takes a tutorial approach to illustrate how 20 years of source development and technology has facilitated the journey of optical frequency combs from the lab into the field, and a view to the future with these technologies.
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AEDGE: Atomic experiment for dark matter and gravity exploration in space

Yousef Abou El-Neaj, +139 more
TL;DR: The Atomic Experiment for Dark Matter and Gravity Exploration (AEDGE) as mentioned in this paper is a space experiment using cold atoms to search for ultra-light dark matter, and to detect gravitational waves in the frequency range between the most sensitive ranges of LISA and the terrestrial LIGO/Virgo/KAGRA/INDIGO experiments.
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AION: An Atom Interferometer Observatory and Network

TL;DR: AION (Atom Interferometer Observatory and Network) as mentioned in this paper is a proposed UK-based experimental program using cold strontium atoms to search for ultra-light dark matter, to explore gravitational waves in the mid-frequency range between the peak sensitivities of the LISA and LIGO/Virgo/ KAGRA/INDIGO-Einstein Telescope/Cosmic Explorer experiments, and to probe other frontiers in fundamental physics.
References
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Journal ArticleDOI

Deep inelastic scattering of polarized electrons by polarized 3He and the study of the neutron spin structure.

TL;DR: The neutron longitudinal and transverse asymmetries have been extracted from deep inelastic scattering of polarized electrons by a polarized $^3$He target at incident energies of 19.42, 22.66 and 25.51 GeV.
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New Test of Local Lorentz Invariance Using a Ne 21 − Rb − K Comagnetometer

TL;DR: A new comagnetometer is developed using Ne atoms with nuclear spin I=3/2 and Rb atoms polarized by spin exchange with K atoms to search for tensor interactions that violate local Lorentz invariance, improving previous limits by 2 to 4 orders of magnitude and placing the most stringent constraint on deviations from local Lorenz invariance.
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A Preliminary Measurement of the Fine Structure Constant Based on Atom Interferometry

TL;DR: In this paper, the recoil velocity of a cesium atom due to coherent scattering of a photon is measured using an atom interferometer method, and the current fractional uncertainty is Δα/α = 7.4 × 10-9.
Journal ArticleDOI

Quantum-limited cooling and detection of radio-frequency oscillations by laser-cooled ions

TL;DR: A single trapped ion, laser cooled into its quantum ground state of motion, may be used as a very-low-temperature detector of radio-frequency signals applied to the trap end caps of single trapped electron and proton spectroscopy.
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Single-ion nuclear clock for metrology at the 19th decimal place.

TL;DR: A virtual clock transition composed of stretched states within the 5F(5/2) electronic ground level of both nuclear ground and isomeric manifolds is proposed and is shown to offer unprecedented systematic shift suppression, allowing for clock performance with a total fractional inaccuracy approaching 1×10(-19).
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