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Quantum Fisher Information Reveals UV-IR Mixing in the Strange Metal
David Bałut, Xuefei Guo, Niels de Vries +4
The density-density response in optimally doped BiSrCaCuO has recently been shown to exhibit conformal symmetry. Using, the experimentally inferred conformal dy…
Computing the Invariant in Two-Dimensional Strongly-Correlated Systems
Sounak Sinha, Derek Y. Pan, Barry Bradlyn
We show that the two-dimensional invariant for time-reversal invariant insulators can be formulated in terms of the boundary-condition dependence of the ground state…
Charge Susceptibility and Kubo Response in Hatsugai-Kohmoto-related Models
Yuhao Ma, Jinchao Zhao, Edwin W. Huang +3
We study in depth the charge susceptibility for the band Hatsugai-Kohmoto (HK) and orbital (OHK) models. As either of these models describes a Mott insulator, the charge susceptibi…
Topological Phase Transition without Single-Particle-Gap Closing in Strongly Correlated Systems
Peizhi Mai, Jinchao Zhao, Thomas A. Maier +2
We show here that numerous examples abound where changing topology does not necessarily close the bulk insulating charge gap as demanded in the standard non-interacting picture. Fr…
Ground state stability, symmetry, and degeneracy in Mott insulators with long range interactions
Dmitry Manning-Coe, Barry Bradlyn
Recently, models with long-range interactions -- known as Hatsugai-Kohmoto (HK) models -- have emerged as a promising tool to study the emergence of superconductivity and topology…
Failure of Topological Invariants in Strongly Correlated Matter
Jinchao Zhao, Peizhi Mai, Barry Bradlyn +1
We show exactly that standard `invariants' advocated to define topology for non-interacting systems deviate strongly from the Hall conductance whenever the excitation spectrum cont…