BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Andrew Geraci (Northwestern) DTSTART:20200506T143000Z DTEND:20200506T153000Z DTSTAMP:20260404T092950Z UID:BeyondSpacetime/1 DESCRIPTION:Title: Searching for “fifth-forces”\, dark Matter\, and quantu m gravity in the lab\nby Andrew Geraci (Northwestern) as part of Beyon d spacetime\n\n\nAbstract\nWe normally think of large accelerators and mas sive detectors when we consider the frontiers of elementary particle physi cs\, pushing to understand the universe at higher and higher energy scales . However\, several tabletop low-energy experiments are positioned to disc over a wide range of new physics beyond the Standard model of particle phy sics\, where feeble interactions require precision measurements rather tha n high energies. In high vacuum\, optically-levitated dielectric nanosphe res achieve excellent decoupling from their environment\, making force sen sing at the zeptonewton level (10-21 N) achievable. In this talk I will d escribe our progress towards using these sensors for tests of the Newtonia n gravitational inverse square law at micron length scales. Optically lev itated dielectric objects and show promise for a variety of other applicat ions\, including searches for gravitational waves and Dark Matter. Coolin g these objects into the quantum regime of their motion paves the way for tests of quantum coherence in macroscopic objects and tests of whether gra vity can destroy such coherence. Looking forward\, these systems may enabl e us to examine the role that gravity plays in quantum mechanical entangle ment.\n LOCATION:https://stable.researchseminars.org/talk/BeyondSpacetime/1/ END:VEVENT END:VCALENDAR