Accession Number : ADA585246


Title :   Quantum Simulation of the Hubbard Model Using Ultra-Cold Atoms


Descriptive Note : Final rept. 26 Feb 2008-16 Feb 2012


Corporate Author : PENNSYLVANIA STATE UNIV STATE COLLEGE DEPT OF PHYSICS


Personal Author(s) : O'Hara, Kenneth M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a585246.pdf


Report Date : Nov 2008


Pagination or Media Count : 20


Abstract : 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, Eric's results predict that we should be able to perform even more stringent tests of Efimov's 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.


Descriptors :   *FERMIONS , ATOMS , BOSE EINSTEIN CONDENSATES , BOSONS , RECOMBINATION REACTIONS , SPIN STATES , SUPERCONDUCTIVITY , SUPERFLUIDITY


Subject Categories : Nuclear Physics & Elementary Particle Physics
      Quantum Theory and Relativity


Distribution Statement : APPROVED FOR PUBLIC RELEASE