Search for Ultralight Dark Matter with a Frequency Adjustable Diamagnetic Levitated Sensor

【摘要】 Among several dark matter candidates, bosonic ultra-light(sub-meV) dark matter is well motivated because it could couple to the Standard Model and induce new forces. Previous MICROSCOPE and E¨ot–Wash torsion experiments have achieved high accuracy in the sub-1 Hz region. However, at higher frequencies there is still a lack of relevant experimental research. We propose an experimental scheme based on the diamagnetic levitated micromechanical oscillator, one of the most sensitive sensors for acceleration sensitivity below the kilohertz scale.In order to improve the measurement range, we utilize a sensor whose resonance frequency ω0 could be adjusted from 0.1 Hz to 100 Hz. The limits of the coupling constant gB-Lare improved by more than 10 times compared to previous reports, and it may be possible to achieve higher accuracy by using the array of sensors in the future.更多还原

【Abstract】 Among several dark matter candidates, bosonic ultra-light(sub-meV) dark matter is well motivated because it could couple to the Standard Model and induce new forces. Previous MICROSCOPE and E¨ot–Wash torsion experiments have achieved high accuracy in the sub-1 Hz region. However, at higher frequencies there is still a lack of relevant experimental research. We propose an experimental scheme based on the diamagnetic levitated micromechanical oscillator, one of the most sensitive sensors for acceleration sensitivity below the kilohertz scale.In order to improve the measurement range, we utilize a sensor whose resonance frequency ω0 could be adjusted from 0.1 Hz to 100 Hz. The limits of the coupling constant gB-Lare improved by more than 10 times compared to previous reports, and it may be possible to achieve higher accuracy by using the array of sensors in the future.更多还原