Bosonic superfluid on lowest Landau level

Sergej Moroz; Dam Thanh Son

doi:10.1103/physrevlett.122.235301

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arXiv · 1901.06088

Bosonic superfluid on lowest Landau level

Sergej Moroz·Dam Thanh Son

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Abstract

We develop a low-energy effective field theory of a two-dimensional bosonic superfluid on the lowest Landau level at zero temperature and identify a Berry term that governs the dynamics of coarse-grained superfluid degrees of freedom. For an infinite vortex crystal we compute how the Berry term affects the low-energy spectrum of soft collective Tkachenko oscillations and non-dissipative Hall responses of the particle number current and stress tensor. This term gives rise to a quadratic in momentum term in the Hall conductivity, but does not generate a non-dissipative Hall viscosity.

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cond-mat.quant-gas cond-mat.str-el cond-mat.supr-con hep-th

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Sergej Moroz, Dam Thanh Son. 2019-01-18. Bosonic superfluid on lowest Landau level. https://doi.org/10.1103/physrevlett.122.235301

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