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- W2938546342 abstract "We use both mass and internal energy specified rubidium atoms to jointly test the weak equivalence principle (WEP). We improve the four-wave double-diffraction Raman transition method (FWDR) we proposed before to select atoms with certain mass and angular momentum state, and perform dual-species atom interferometer. By combining $^{87}$Rb and $^{85}$Rb atoms with different angular momenta, we compare the differential gravitational acceleration of them, and determine the value of E{o}tv{o}s parameter, $eta$, which measures the strength of the violation of WEP. For one case ($^{87}$Rb$|emph{F}=1rangle$ - $^{85}$Rb$|emph{F}=2rangle$),the statistical uncertainty of $eta$ is $1.8 times 10^{-10}$ at integration time of 8960 s. With various systematic errors correction, the final value is $eta=(-4.4 pm 6.7) times 10^{-10}$. Comparing with the previous WEP test experiments using atoms, this work gives a new upper limit of WEP violation for $^{87}$Rb and $^{85}$Rb atom pairs." @default.
- W2938546342 created "2019-04-25" @default.
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- W2938546342 date "2021-08-26" @default.
- W2938546342 modified "2023-10-16" @default.
- W2938546342 title "Joint mass-and-energy test of the equivalence principle at the <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msup><mml:mn>10</mml:mn><mml:mrow><mml:mo>−</mml:mo><mml:mn>10</mml:mn></mml:mrow></mml:msup></mml:math> level using atoms with specified mass and internal energy" @default.
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- W2938546342 doi "https://doi.org/10.1103/physreva.104.022822" @default.
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