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Roton-Maxon Excitation Spectrum of Bose Condensates in a Shaken Optical Lattice
Li-Chung Ha, Logan W. Clark, Colin V. Parker +2
We present experimental evidence showing that an interacting Bose condensate in a shaken optical lattice develops a roton-maxon excitation spectrum, a feature normally associated w…
Strong Interaction Effects in Superfluid Ising Quantum Phase Transition
Wei Zheng, Boyang Liu, Jiao Miao +2
We study the quantum phase transition between a normal Bose superfluid to one that breaks additional Z_2 Ising symmetry. Using the recent shaken optical lattice experiment as an ex…
Geometric scaling of Efimov states in a - mixture
Shih-Kuang Tung, Karina Jimenez-Garcia, Jacob Johansen +2
In few-body physics, Efimov states are an infinite series of three-body bound states that obey universal discrete scaling symmetry when pairwise interactions are resonantly enhance…