Quantum Simulation of the Hubbard Model Using Ultra-Cold Atoms
Final rept. 26 Feb 2008-16 Feb 2012
PENNSYLVANIA STATE UNIV STATE COLLEGE DEPT OF PHYSICS
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We have been investigating the stability of the 3-state Fermi gas with respect to decay due to three-body recombination. The three-body recombination rate is an observable we can use to compare to theoretical predications based on solutions to the quantum 3-body problem. Understanding the stability of the gas also has important implications for the feasibility of future studies of quantum chromodynamics in this system. We have been working with Eric Braaten, a high energy physics theorist at Ohio State University, to interpret our data. Eric has been able to fit our results using a three-body model with only 2 free parameters. His results indicate that our results are in agreement with predictions made by Vitaly Efimov, a Russian nuclear physicist, over 35 years ago. Futhermore, Erics results predict that we should be able to perform even more stringent tests of Efimovs predictions in experiments we are performing right now. These results will be of interest in several subfields of physics including nuclear, high-energy, atomic, molecular and particle physics as well as quantum chemistry.
- Nuclear Physics and Elementary Particle Physics
- Quantum Theory and Relativity