Emergent Kinetics and Fractionalized Charge in 1D Spin-Orbit Coupled Flatband Optical Lattices

2013/08/31 by Fei Lin, Chuanwei Zhang, V. W. Scarola · 1 citation
Computer Science · Physics and Astronomy · #Charge (physics) #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Coupling (piping) #Electron #Fermion #Fractional quantum Hall effect #Lattice (music) #Materials science #Optical lattice #Orbit (dynamics) #Physics #Quantum #Quantum Hall effect #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Quantum spin Hall effect #Spin (aerodynamics) #Spin–orbit interaction #Superfluidity #Ultracold atom #cond-mat.quant-gas #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.112.110404

published as Phys. Rev. Lett. 112, 110404 (2014) · 8 pages, 3 figures

openalex publication_date 2014/03/18 · arxiv created 2014/06/09 · arxiv updated 2014/06/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Recent ultracold atomic gas experiments implementing synthetic spin-orbit coupling allow access to flatbands that emphasize interactions. We model spin-orbit coupled fermions in a one-dimensional flatband optical lattice. We introduce an effective Luttinger-liquid theory to show that interactions generate collective excitations with emergent kinetics and fractionalized charge, analogous to properties found in the two-dimensional fractional quantum Hall regime. Observation of these excitations would provide an important platform for exploring exotic quantum states derived solely from interactions.

Citations

• Many-body physics with ultracold gases
• Exactly Solvable Fermion Chain Describing aν=1/3Fractional Quantum Hall State
• Laughlin's function on a cylinder: plasma analogy and representation as a quantum polymer
• Probing many-body states of ultracold atoms via noise correlations
• Spatial quantum noise interferometry in expanding ultracold atom clouds

Cited by

• Degenerate quantum gases with spin–orbit coupling: a review

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