Bulletin of the American Physical Society
2007 APS Four Corners Section/SPS Zone 16 Joint Fall Meeting
Volume 52, Number 14
Friday–Saturday, October 19–20, 2007; Flagstaff, Arizona
Session L1: Closing Plenary |
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Chair: William Fairbank, Colorado State University, Four Corners Section Vice Chair Room: Wettaw (Bldg. 88) Room 130 |
Saturday, October 20, 2007 3:30PM - 4:06PM |
L1.00001: Fun with ultracold atoms Invited Speaker: Ultracold gases of atoms are well-controlled model systems for exploring interesting many-body quantum phenomena, such as superfluidity in a Fermi gas. With ultracold atom gases we have the unique ability to control the interactions between particles by using atomic scattering resonances, called Feshbach resonances. These resonances can be used to pair atoms in an atomic Fermi gas and thereby create molecular Bose-Einstein condensates and Fermi superfluids. [Preview Abstract] |
Saturday, October 20, 2007 4:06PM - 4:42PM |
L1.00002: Quantum mechanics and the principle of equivalence Invited Speaker: Einstein's principle of equivalence is based on the notion of classical trajectories in spacetime, and the question arises of how this principle applies to quantum particles, especially those in delocalized, highly-non-classical states. I shall describe a quantum version of Galileo's classic experiment, using a model quantum clock to measure the time of flight of a quantum particle in a background gravitational field. Because the particle's mass does not scale out of Schrodinger's equation, unlike in the Newtonian case, conformity with the principle of equivalence is far from obvious and involves some interesting subtleties. It also suggests some new experiments. [Preview Abstract] |
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