A controlled expansion in s² for electrons with concentrated kinematics allows analytical calculations of spectral broadening, T-linear resistivity in bad metals, and spectral functions in Mott semimetals for Hubbard and Chern band models.
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Controlled loop expansion in strained MATBG reveals U(1) symmetry suppressing Mott band linewidths at order s² and predicts strain-induced kinks plus a flat trion band, with one-loop QTM spectra compared to experiment.
In the topological heavy fermion model, the Mott semimetal phase hosts well-defined quasiparticles with dispersion and relaxation rate proportional to the interaction strength.
A loop expansion in the topological heavy fermion model yields quasiparticle lifetimes and a Curie-Weiss flavor susceptibility above the ordering temperature despite strong interactions.
Interfering two obliquely propagating surface acoustic waves forms a tunable acoustoelectric superlattice in 2D materials, enabling in-situ control of minibands, flat bands, and nontrivial valley Chern numbers in massive monolayer graphene.
citing papers explorer
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Controlled expansion for correlated electrons with concentrated kinematics
A controlled expansion in s² for electrons with concentrated kinematics allows analytical calculations of spectral broadening, T-linear resistivity in bad metals, and spectral functions in Mott semimetals for Hubbard and Chern band models.
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Controlled Loop Expansion for Strained Twisted Bilayer Graphene
Controlled loop expansion in strained MATBG reveals U(1) symmetry suppressing Mott band linewidths at order s² and predicts strain-induced kinks plus a flat trion band, with one-loop QTM spectra compared to experiment.
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Lifetime and spectral function of topological heavy fermions
In the topological heavy fermion model, the Mott semimetal phase hosts well-defined quasiparticles with dispersion and relaxation rate proportional to the interaction strength.
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Controlled Loop Expansion for the Topological Heavy Fermion Model
A loop expansion in the topological heavy fermion model yields quasiparticle lifetimes and a Curie-Weiss flavor susceptibility above the ordering temperature despite strong interactions.