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SUMMARY:Andrew Geraci (Northwestern)
DTSTART:20200506T143000Z
DTEND:20200506T153000Z
DTSTAMP:20260422T212527Z
UID:BeyondSpacetime/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BeyondSpacet
 ime/1/">Searching for “fifth-forces”\, dark Matter\, and quantum gravi
 ty in the lab</a>\nby Andrew Geraci (Northwestern) as part of Beyond space
 time\n\n\nAbstract\nWe normally think of large accelerators and massive de
 tectors when we consider the frontiers of elementary particle physics\, pu
 shing to understand the universe at higher and higher energy scales. Howev
 er\, several tabletop low-energy experiments are positioned to discover a 
 wide range of new physics beyond the Standard model of particle physics\, 
 where feeble interactions require precision measurements rather than high 
 energies.  In high vacuum\, optically-levitated dielectric nanospheres ach
 ieve excellent decoupling from their environment\, making force sensing at
  the zeptonewton level (10-21 N) achievable.  In this talk I will describe
  our progress towards using these sensors for tests of the Newtonian gravi
 tational inverse square law at micron length scales.  Optically levitated 
 dielectric objects and show promise for a variety of other applications\, 
 including searches for gravitational waves and Dark Matter.  Cooling these
  objects into the quantum regime of their motion paves the way for tests o
 f quantum coherence in macroscopic objects and tests of whether gravity ca
 n destroy such coherence. Looking forward\, these systems may enable us to
  examine the role that gravity plays in quantum mechanical entanglement.\n
LOCATION:https://researchseminars.org/talk/BeyondSpacetime/1/
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