Accession Number : ADA624971


Title :   Direct Observation of Zitterbewegung in a Bose Einstein Condensate


Descriptive Note : Journal article


Corporate Author : MARYLAND UNIV COLLEGE PARK


Personal Author(s) : LeBlanc, L J ; Beeler, M C ; Jimenez-Garcia, K ; Perry, A R ; Sugawa, S ; Williams, R A ; Spielman, I B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a624971.pdf


Report Date : 03 Jul 2013


Pagination or Media Count : 14


Abstract : Zitterbewegung, a force-free trembling motion first predicted for relativistic fermions like electrons, was an unexpected consequence of the Dirac equation's unification of quantum mechanics and special relativity. Though the oscillatory motion's large frequency and small amplitude have precluded its measurement with electrons, zitterbewegung is observable via quantum simulation. We engineered an environment for 87Rb Bose Einstein condensates where the constituent atoms behaved like relativistic particles subject to the one-dimensional Dirac equation. With direct imaging, we observed the sub-micrometre trembling motion of these clouds, demonstrating the utility of neutral ultracold quantum gases for simulating Dirac particles.


Descriptors :   *BOSE EINSTEIN CONDENSATES , *FERMIONS , *FORCE(MECHANICS) , *QUANTUM THEORY , AMPLITUDE , ATOMS , ENVIRONMENTS , EQUATIONS , FREQUENCY , GASES , IMAGES , MOTION , OBSERVATION , OSCILLATION , PARTICLES , RELATIVITY THEORY , REPRINTS , SIMULATION


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


Distribution Statement : APPROVED FOR PUBLIC RELEASE