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arxiv: 2511.01115 · v2 · submitted 2025-11-02 · ❄️ cond-mat.str-el

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A microscopic model of fractionalized Fermi liquid

P. Coleman , A. Panigrahi , A. Tsvelik
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classification ❄️ cond-mat.str-el
keywords modelancillacolemanfermiformulatedformulationfractionalizedhubbard
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In this short letter we identify a relationship between the Kondo lattice model formulated in Coleman {\it et.al}, Phys. Rev. Lett. {\bf 129}, 177601 (2022) and Ancilla Layer formulation of the Hubbard model recently proposed by Zhang and Sachdev.

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  1. Tractable model for a fractionalized Fermi liquid (FL$^*$) on a square lattice

    cond-mat.str-el 2026-04 unverdicted novelty 6.0

    The model has a hybridized phase where spin-liquid Majorana fermions and conduction electrons form a common small Fermi surface violating the Luttinger count, with momentum-dependent coherence factors that produce Fermi arcs.