Signatures of bosonic excitations in high-harmonic spectra of Mott insulators
Physical Review B, pp. 1951392020.
The high harmonic spectrum of the Mott insulating Hubbard model has recently been shown to exhibit plateau structures with cutoff energies determined by $n$th nearest neighbor doublon-holon recombination processes. The spectrum thus allows to extract the on-site repulsion $U$. Here, we consider generalizations of the single-band Hubbard...More
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