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VERSION:2.0
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CALSCALE:GREGORIAN
X-WR-CALNAME:Applied Physics/Physics Colloquium: Savas Dimopoulos - "Superr
 adiant Interactions of Cosmic Relics" 
X-WR-TIMEZONE:Pacific Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20261009T072522Z
UID:tag:localist.com\,2008:EventInstance_51577385201055
DTSTART:20260113T233000Z
DTEND:20260114T003000Z
DESCRIPTION:Abstract: Cosmic relics such as the cosmic neutrino background 
 (CνB) are among the most compelling and elusive targets in fundamental ph
 ysics. With conventional detectors\, the interaction rate is so small that
  a 10-cm sphere of matter would see fewer than one event over the age of t
 he universe. I will describe a framework in which this changes dramaticall
 y when macroscopic targets are prepared in simple quantum product states\,
  as in NMR spin ensembles. In this regime\, inelastic transitions of the t
 arget’s internal state can exhibit superradiant enhancements: the rate s
 cales as N² with the number of constituents\, boosting the CνB rate for 
 a 10-cm sphere by ~20 orders of magnitude to ~1 Hz. I will present represe
 ntative rates and discovery opportunities for relic neutrinos\, axion and 
 dark-photon dark matter\, and local neutrino sources (reactor and solar)\,
  and explain why thermal-neutron scattering on NMR samples offers a natura
 l first testbed for the needed quantum protocols. Finally\, I will show ho
 w superradiant interactions appear as correlated noise on the target\, mot
 ivating quantum observables beyond traditional energy-exchange measurement
 s.\n\nSavas Dimopoulos holds the Hamamoto Chair in the School of Humanitie
 s and Sciences at Stanford University. He is known for his novel proposals
  addressing the hierarchy problem\, including Extended Technicolor\, the S
 upersymmetric Standard Model\, Large Extra Dimensions\, and Split Supersym
 metry. As a student\, he was one of the early proponents of primordial bar
 yogenesis. He later proposed a new class of gravitational wave detectors b
 ased on atom interferometry\, now forming the basis of the MAGIS and AION 
 projects in the US and UK. He also proposed searching for axions and other
  light bosons through black hole superradiance\, an approach now pursued b
 y LIGO/Virgo. More recently\, he has proposed novel detectors based on spe
 cial quantum configurations that can greatly enhance the detection prospec
 ts for dark matter\, the primordial cosmic neutrino background\, and nucle
 ar reactor neutrinos.\n\nHe has received the Tomassoni Award and the Sakur
 ai Prize of the APS “for his creative ideas on dynamical symmetry breaki
 ng\, supersymmetry\, and extra spatial dimensions\, which have shaped theo
 retical research on TeV-scale physics\, thereby inspiring a wide range of 
 experiments.” He is a member of the U.S. National Academy of Sciences an
 d the American Academy of Arts and Sciences\, and was featured in the docu
 mentary Particle Fever.
GEO:37.428953;-122.172839
LOCATION:Hewlett Teaching Center\, 201
SUMMARY:Applied Physics/Physics Colloquium: Savas Dimopoulos - "Superradian
 t Interactions of Cosmic Relics" 
URL;VALUE=URI:https://events.stanford.edu/event/applied-physicsphysics-coll
 oquium-savas-dimopoulos-superradiant-interactions-of-cosmic-relics
CATEGORIES:Lecture/Presentation/Talk
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