Topological nature of Hubbard bands in strongly correlated systems

V. Yu. Irkhin; Yu. N. Skryabin

doi:10.1016/j.physleta.2019.06.023

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arXiv · 1909.06248

Topological nature of Hubbard bands in strongly correlated systems

V. Yu. Irkhin·Yu. N. Skryabin

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Abstract

The topological nature of the Mott-Hubbard state in strongly correlated systems is treated. These systems are described in terms of spin-charge separation, i.e. spinon-holon deconfinement in the gauge field. Analogies with the quantum Hall effect and Landau quantization are considered, the presence of the Chern-Simons term being important for proper description of the Hubbard splitting. Occurrence of topological frustrations with doping in an effective two-band model is demonstrated. The role of orbital degrees of freedom and possible occurrence of orbital currents are discussed.

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V. Yu. Irkhin, Yu. N. Skryabin. 2019-09-13. Topological nature of Hubbard bands in strongly correlated systems. https://doi.org/10.1016/j.physleta.2019.06.023

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