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DTSTART:20200101T000000
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DTSTART;TZID=UTC:20200213T160000
DTEND;TZID=UTC:20200213T170000
DTSTAMP:20260417T161305
CREATED:20190909T185034Z
LAST-MODIFIED:20200204T221236Z
UID:1210-1581609600-1581613200@rpm.physics.lbl.gov
SUMMARY:Ben Safdi (U. Michigan) "The Search for Axion Dark Matter
DESCRIPTION:Abstract: \nDark matter is the dominant source of matter in our Universe.  However\, while dark matter dictates the evolution of large-scale astrophysical systems through its gravitational effects\, the particle nature of dark matter is unknown.  In this talk I will review the current status of the search for the particle dark matter candidate called the axion\, which is both well-motivated theoretically and also relatively unexplored experimentally.  I will focus specifically on new large-scale numerical simulations of axion cosmology that lead to precise predictions for (i) the axion mass that gives the correct dark matter abundance\, and (ii) the structure of dark matter on small astrophysical scales.  I will show that axion dark matter may be harder to detect directly in the laboratory than previously thought\, given that the cosmological axions are mostly confined to compact minihalos\, but that this dark matter scenario may still be detectable using radio telescope searches for axion-induced radio lines.
URL:https://rpm.physics.lbl.gov/event/reserved-56/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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