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arXiv:2510.25358 · Physical Review A

Entanglement-enhanced correlation propagation in the one-dimensional SU ( N ) Fermi-Hubbard model

Mathias Mikkelsen, Ippei Danshita

Published May 14, 2026• 0 citations
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Abstract

We investigate the dynamics of correlation propagation in the one-dimensional Fermi-Hubbard model with SU($N$) symmetry when the repulsive-interaction strength is quenched from a large value, at which the ground state is a Mott-insulator with $1/N$ filling, to an intermediate value. From approximate analytical insights based on a simple model that captures the essential physics of the doublon excitations, we show that entanglement in the initial state leads to collective enhancement of the propagation velocity $v_{\text{SU}(N)}$ when $N>2$, becoming equal to the velocity of the Bose-Hubbard model in the large-$N$ limit. These results are supported by numerical calculations of the density-density correlation in the quench dynamics for $N=2,3,4,$ and $6$.

DOI
10.1103/n59n-3rf3

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