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Creators/Authors contains: "Stoudenmire, E. Miles"

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  1. ; ; ; (, Physical Review Research)
    The Kondo lattice is one of the classic examples of strongly correlated electronic systems. We conduct a controlled study of the Kondo lattice in one dimension, highlighting the role of excitations created by the composite fermion operator. Using time-dependent matrix product state methods, we compute various correlation functions and contrast them with both large-N mean-field theory and the strong-coupling expansion. We show that the composite fermion operator creates long-lived, charge-e and spin-1/2 excitations, which cover the low-lying single-particle excitation spectrum of the system. Furthermore, spin excitations can be thought to be composed of such fractionalized quasiparticles with a residual interaction which tend to disappear at weak Kondo coupling. Published by the American Physical Society2024 
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    Free, publicly-accessible full text available June 1, 2025
  2. ; ; ; (, Physical Review B)
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  3. ; ; ; ; (, Physical Review X)
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