Webinar〝Ultralight dark matter searches with laser interferometry〞

Despite overwhelming observational evidence for the existence of dark matter, its identity and properties remain a mystery. Recently, bosonic ultralight fields with masses below 1eV are gaining a lot of attention, as they are well motivated by cosmology. Laser interferometers are sensitive to oscillations from such fields that change the interference fringe. Recently, the speaker and his team have proposed to search for axion dark matter by measuring the birefringence effect using a bow-tie optical ring cavity [PRL 121, 161301 (2018)] and gravitational wave detectors [PRL 123, 111301 (2019)]. They have also proposed to search for vector dark matter by searching for non-standard force acting on mirrors [PRD 102, 102001 (2020)]. In this talk, the speaker will present some of the first results from a table-top experiment, Dark matter Axion search with riNg Cavity Experiment(DANCE) [arXiv:2303.035947], and the status of axion and vector dark matter searches using gravitational wave detectors.

時間:2023.04.25(二) 21:00~22:20
頻道:Zoom ID:421-480-1692 ← cosmology
講者:Yuta Michimura 道村 唯太 (LIGO Laboratory, Caltech & University of Tokyo)



“Copernicus Webinar and Colloquium Series”: To promote scientific discussions during this pandemic, they are organizing an online seminar series, i.e. Copernicus Webinar Series, seeking the most outstanding speakers to introduce innovative ideas and important progress in the field of gravity and cosmology. This series is named after the famous Polish Astronomer, Nicolaus Copernicus, whose discovery eventually marked the dawn of modern science.




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