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UID:2070@ub.edu
DTSTART:20221010T130000Z
DTEND:20221010T150000Z
DTSTAMP:20250928T161946Z
URL:https://www.ub.edu/grc_logos/activities/quantum-gravity-in-a-laborator
 y/
SUMMARY:Quantum gravity in a laboratory
DESCRIPTION:Nick Huggett (University of Illinois Chicago)The characteristic
  &ndash\; Planck &ndash\; energy scale of quantum gravity is utterly beyon
 d current technology\, making experimental access to the relevant physics 
 apparently impossible. Nevertheless\, low energy experiments linking gravi
 ty and the quantum have been undertaken: the Page and Geilker quantum Cave
 ndish experiment\, and the Colella-Overhauser-Werner neutron interferometr
 y experiment\, for instance. However\, neither probes states in which grav
 ity remains in a coherent quantum superposition\, unlike &mdash\; it is cl
 aimed &mdash\; recent proposals that have created considerable interest am
 ong physicists. In essence\, if two initially unentangled subsystems inter
 acting solely via gravity become entangled\, then a simple theorem of quan
 tum mechanics shows that gravity cannot be a classical subsystem. There ar
 e formidable challenges to creating such a system\, but remarkably\, table
 top technology into the gravitational fields of very small bodies has adva
 nced to the point that such an experiment might be feasible in the next se
 veral years. In this talk I will explain the proposal and what it aims to 
 show\, highlighting the important ways in which its interpretation is theo
 ry-laden. (Drawn from joint work with Niels Linnemann and Mike Schneider.)
CATEGORIES:Extra talks
LOCATION:Department of Philosophy\, Room B7/1140\, Campus UAB Building B (A
 lso online)
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=\, Spain;X-APPLE-RADIUS=100
 ;X-TITLE=Department of Philosophy\, Room B7/1140\, Campus UAB Building B (
 Also online):geo:0,0
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