The Fractional Hall hierarchy from duality

Kristan Jensen; Amir Raz

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arXiv · 2412.17761

The Fractional Hall hierarchy from duality

Kristan Jensen·Amir Raz

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Abstract

We show that a modified version of Son's Dirac composite fermion theory proposed by Seiberg et al gives a candidate unified description of the gapped and gapless fractional quantum Hall states within a single Landau level. Our main tool is the successive application of three-dimensional dualities to partially filled Landau levels of composite fermions, which imply that this theory has a complicated landscape of gapped vacua and critical points. This construction is the Lagrangian, or effective field theory, analogue of the flux attachment procedure. The critical points exist at even denominator filling and are well-described by a Fermi surface for a weakly coupled composite fermion coupled to an abelian Chern-Simons theory. The gapped states include odd-denominator filling fraction states with an abelian Chern-Simons description which we show matches the one expected for hierarchy states, as well as non-abelian states at even-denominator filling that arise from pair instabilities of the composite fermion's Fermi surface.

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Kristan Jensen, Amir Raz. 2024-12-23. The Fractional Hall hierarchy from duality. https://arxiv.org/abs/2412.17761

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