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- W4309393950 abstract "We investigate the relaxation dynamics of equal-time correlations in the antiferromagnetic phase of the XXZ spin-1/2 chain following a global quantum quench of the anisotropy parameter. We focus, in particular, on the relaxation dynamics starting from an initial N'eel state. Using state-of-the-art density-matrix renormalization group simulations, the exact solution of an effective free-fermion model, and the quench-action approach within the thermodynamic Bethe ansatz, we show that the late-time relaxation is characterized by a power-law decay $sim t^{-3/2}$ independent of anisotropy. This is in contrast to the previously studied exponential decay of the antiferromagnetic order parameter. Remarkably, the effective model describes the numerical data extremely well even on a quantitative level if higher order corrections to the leading asymptotic behavior are taken into account." @default.
- W4309393950 created "2022-11-26" @default.
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- W4309393950 date "2022-11-16" @default.
- W4309393950 modified "2023-10-16" @default.
- W4309393950 title "Power-law decay of correlations after a global quench in the massive XXZ chain" @default.
- W4309393950 doi "https://doi.org/10.48550/arxiv.2211.09204" @default.
- W4309393950 hasPublicationYear "2022" @default.
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