title: Weyl Points in Three-Dimensional Optical Lattices: Synthetic Magnetic Monopoles in Momentum Space.
abstract: We show that a Hamiltonian with Weyl points can be realized for ultracold atoms using laser-assisted tunneling in three-dimensional optical lattices. Weyl points are synthetic magnetic monopoles that exhibit a robust, three-dimensional linear dispersion, identical to the energy-momentum relation for relativistic Weyl fermions, which are not yet discovered in particle physics. Weyl semimetals are a promising new avenue in condensed matter physics due to their unusual properties such as the topologically protected "Fermi arc" surface states. However, experiments on Weyl points are highly elusive. We show that this elusive goal is well within experimental reach with an extension of techniques recently used in ultracold gases.
authors.affiliation: Department of Physics, University of Zagreb, Bijenička cesta 32, 10000 Zagreb, Croatia.
authors.forename: Tena
authors.initials: T
authors.lastname: Dubček
authors.affiliation: Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Colin J
authors.initials: CJ
authors.lastname: Kennedy
authors.affiliation: Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Ling
authors.initials: L
authors.lastname: Lu
authors.affiliation: Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Ketterle
authors.affiliation: Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Marin
authors.initials: M
authors.lastname: Soljačić
authors.affiliation: Department of Physics, University of Zagreb, Bijenička cesta 32, 10000 Zagreb, Croatia.
authors.forename: Hrvoje
authors.initials: H
authors.lastname: Buljan
mesh_terms: D003080:Cold Temperature; D004601:Elementary Particles; D005740:Gases; D008280:Magnetics; D008962:Models, Theoretical; D011789:Quantum Theory
chemical_list: D005740:Gases