Simulation and Detection of Dirac Fermions with Cold Atoms in an Optical Lattice

Shi-Liang Zhu, Baigeng Wang, and L.-M. Duan
Phys. Rev. Lett. 98, 260402 – Published 25 June 2007

Abstract

We propose an experimental scheme to simulate and observe relativistic Dirac fermions with cold atoms in a hexagonal optical lattice. By controlling the lattice anisotropy, one can realize both massive and massless Dirac fermions and observe the phase transition between them. Through explicit calculations, we show that both the Bragg spectroscopy and the atomic density profile in a trap can be used to demonstrate the Dirac fermions and the associated phase transition.

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  • Received 24 March 2007

DOI:https://doi.org/10.1103/PhysRevLett.98.260402

©2007 American Physical Society

Authors & Affiliations

Shi-Liang Zhu1,3, Baigeng Wang2, and L.-M. Duan3

  • 1ICMP and LPIT, Department of Physics, South China Normal University, Guangzhou, China
  • 2National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, China
  • 3FOCUS Center and MCTP, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA

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Issue

Vol. 98, Iss. 26 — 29 June 2007

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