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arXiv · 2504.14661

Symmetry resolved entanglement entropy after an inhomogeneous quench

Hui-Huang Chen·Xin-Liang Zhou·Jiayu Yin·Ming Zhang
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Abstract

We investigate the non-equilibrium time evolution of symmetry-resolved entanglement entropy (SREE) following an inhomogeneous quench in a critical one-dimensional free fermion system. Using conformal field theory, we derive an exact expression for the SREE and analyze its behavior. We find that, at leading order in the long-time limit, the SREE grows logarithmically as $\log t$. While the equipartition of entanglement holds at leading order, we identify subleading corrections that break it. Our numerical simulations corroborate the analytical predictions with excellent agreement.

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Hui-Huang Chen, Xin-Liang Zhou, Jiayu Yin, Ming Zhang. 2025-04-20. Symmetry resolved entanglement entropy after an inhomogeneous quench. https://arxiv.org/abs/2504.14661

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