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Colloquium: Greg Adkins, Franklin & Marshall College
Start Date: 3/28/2014Start Time: 12:45 PM
End Date: 3/28/2014End Time: 2:00 PM

Event Description:
Greg Adkins
Department of Physics and Astronomy
Franklin & Marshall College

"Positronium: the Simplest Exotic Atom"

Positronium is the exotic atom composed of an electron bound to its own antiparticle, the positron. Positronium is like other atoms, such as hydrogen, in being bound by the Coulombic attraction between particles of unlike charge. It is simpler than hydrogen or other atoms because its constituents are, so far as we know, point-like particles with no internal structure. Positronium is accessible both to high-precision measurements (of energy levels, decay rates, etc.) and to precise calculations based on current theory, so that positronium provides an important test of bound-state methods in Quantum Electrodynamics and a possible window onto new physics.

In this talk I will describe the dominant features of positronium physics in terms of basic quantum mechanics and relativity and will then discuss both refinements in the theory and also the ongoing experimental tests and challenges.

The colloquium will begin promptly at 12:45 p.m. in Science Center 199.
A pizza lunch will be provided for those attending at 12:30 p.m.

Please check our website for any updates or changes: http://www.swarthmore.edu/academics/physics-and-astronomy.xml
Location Information:
*Swarthmore College - Science Center
Room: Science Center 199 - Cunniff Hall
Contact Information:
Name: Carolyn Warfel
Phone: 610-328-8258
Email: cwarfel1@swarthmore.edu
Adkins
Open To
The Public

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