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Oct7
Wave-like dark matter: A sea-change
Dr. Chelsea Bartram, SLAC National Accelerator Laboratory
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Abstract: Dark matter is a feebly interacting particle that is thought to compose 85% of the matter content of the Universe. One potential candidate for the dark matter is the axion, a particle so light it exhibits wave-like behavior. At SLAC, we search for axions using ultra-low noise radios immersed in strong magnetic fields. Under these conditions, the axion is expected to create an electromagnetic signal that can read out using sufficiently low noise amplifiers. Recent advancements in the field of quantum information science have enabled the technology to enhance and measure such a weak signal. I will discuss recent progress made by the DMRadio and ADMX collaborations and the role of SLAC in the future of axion searches.
About Dr. Chelsea Bartram
As a kid, Chelsea tried to imagine radio waves bouncing off the atmosphere into her yard in Ohio. She earned a ham radio license, built a few antennas and realized she could hear people talking in foreign countries. But detecting radio waves created by people didn’t satiate her. She pursued a PhD in nuclear physics at UNC Chapel Hill before transitioning to a post-doc at the University of Washington. Almost two decades later, as a Panofsky fellow at SLAC, she finds herself still searching for radio waves, but this time created by dark matter. These days, she's interested specifically in the axion, whose small mass results in wave-like behavior. It is her hope to find the axion by leveraging both old and new techniques: radio technology and quantum sensing, respectively.
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