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18 April 2024

» arxiv » 1412.7615

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Weyl points in three-dimensional optical lattices: synthetic magnetic monopoles in momentum space
Tena Dubček ; Colin J. Kennedy ; Ling Lu ; Wolfgang Ketterle ; Marin Soljačić ; Hrvoje Buljan ;
Date:	24 Dec 2014
Abstract:	We show that Hamiltonians 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. They are associated with many interesting topological states of matter, such as Weyl semimetals and chiral Weyl fermions. However, Weyl points have yet to be experimentally observed in any system. We show that this elusive goal is well-within experimental reach with an extension of the techniques recently used to obtain the Harper Hamiltonian.
Source:	arXiv, 1412.7615
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