报告时间：2024年11月14日 下午14:00 (14:00, Nov14, 2024)

报告地点：物质楼A309会议室(Room A309, Material Science Building)

报告题目：Searching for Dark Matter with Precision Low-Energy Experiments

报告人：Yevgeny Stadnik  (School of Physics, University of Sydney, Australia)

Abstract：

Ultra-low-mass bosonic particles produced non-thermally in the early Universe may form a coherently oscillating classical field that can comprise the observed cold dark matter.  The very high number density of such particles can give rise to characteristic wave-like signatures that are distinct from the particle-like signatures considered in more traditional searches for WIMP dark matter.  In particular, ultra-low-mass scalar dark matter may induce apparent variations of the fundamental “constants” of Nature, while ultra-low-mass pseudoscalar (axionlike) dark matter may induce time-varying spin-precession effects (including oscillating electric dipole moments).  I discuss the basic principles of and recent results in searches for ultra-low-mass dark matter using a variety of precision low-energy experiments, including atomic spectroscopy, optical cavities and interferometers, torsion pendula, magnetometry, neutron experiments and g-factor measurements. 

Biography：

Dr. Yevgeny earned his PhD degree in University of New South Wales, Australia and now works in University of Sydney, Australia. He has long been working on dark matter and fundamental physics. During 2021-2024 Dr. Yevgeny received ARC Discovery Early Career Research Award.