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SUMMARY:Ippei Obata (Garching\, Max Planck Inst.)
DTSTART:20201105T143000Z
DTEND:20201105T153000Z
DTSTAMP:20260423T021126Z
UID:CENTRA/21
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CENTRA/21/">
 Axion Dark Matter Search with Optical Interferometer</a>\nby Ippei Obata (
 Garching\, Max Planck Inst.) as part of CENTRA Seminar\n\n\nAbstract\nAxio
 n dark matter differentiates the phase velocities of the circular-polarize
 d photons. In this talk\, we present a scheme to measure its phase differe
 nce by using a linear optical cavity. We applied this scheme to the Fabry-
 Perot arm of gravitational wave detectors such as DECIGO\, CE\, and aLIGO.
  We found that their potential sensitivities to the axion-photon coupling 
 constant\, g_{aγ}\, can reach beyond the current limit of CAST with sever
 al orders of magnitude\, at a wide axion mass range 10^{-16}eV < m < 10^{-
 9} eV. Our sensitivity can be achieved without losing any sensitivity to g
 ravitational waves. This talk is based on our recent paper Phys. Rev. Lett
 . 123 (2019) 111301 [arXiv:1903.02017].\n
LOCATION:https://researchseminars.org/talk/CENTRA/21/
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