Glassy dynamics of the one-dimensional Mott insulator excited by a strong terahertz pulse
arXiv:2202.04322 · doi:10.1103/PhysRevResearch.4.L032019
Abstract
The elucidation of nonequilibrium states in strongly correlated systems holds the key to emergence of novel quantum phases. The nonequilibrium-induced insulator-to-metal transition is particularly interesting since it reflects the fundamental nature of competition between itinerancy and localization of the charge degrees of freedom. We investigate pulse-excited insulator-to-metal transition of the half-filled one-dimensional extended Hubbard model. Calculating the time-dependent optical conductivity with the time-dependent density-matrix renormalization group, we find that strong mono- and half-cycle pulses inducing quantum tunneling strongly suppress spectral weights contributing to the Drude weight , even if we introduce a large number of carriers . This is in contrast to a metallic behavior of induced by photon absorption and chemical doping. The strong suppression of in quantum tunneling is a result of the emergence of the Hilbert-space fragmentation, which makes pulse-excited states glassy.
arXiv comment8 pages, 4 figures + Supplemental Material (11 pages, 5 figures)
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