Northwestern University

Feb
27
Tue 2:00 PM

Special Seminar, David Allcock: Laboratory tests of spatial and temporal variation of the fine structure constant using highly charged ions

When: Tuesday, February 27, 2018
2:00 PM - 3:00 PM  

Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Post Docs/Docs - Graduate Students

Contact: Tina Hoff   847.491.3645

Group: AMO: The Atomic, Molecular, and Optical Physics Seminar

Category: Lectures & Meetings

Description:

Title: Laboratory tests of spatial and temporal variation of the fine structure constant using highly charged ions

Speaker: David Allcock, NIST Boulder

 

Abstract: The possibility that fundamental constants such as the fine structure constant vary is one of the most startling predictions of many beyond-Standard Model theories that attempt to unify the gravitational force and explain dark matter and energy. Depending on the theory, these variations could be temporal, in the form of drifts or oscillations, or they could be spatial in the form of cosmological gradients, domain walls, or even dependent on the local matter density. Laboratory tests of fine structure constant variation will require extreme sensitivities of parts-in-10^20. A new generation of atomic clocks based on highly-charged ions have the potential of reaching these levels. I will discuss the prospects for such clocks and review the required techniques and infrastructure.

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