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Quantum advantage in batteries for Sachdev-Ye-Kitaev interactions

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arXiv:2405.03306v2 Announce Type: replace
Abstract: A quantum advantage can be achieved in the unitary charging of quantum batteries if their cells are interacting. Here, we try to clarify with some analytical calculations whether and how this quantum advantage is achieved for sparse Sachdev-Ye-Kitaev interactions. By performing a simple modelization, we find that for $q$-point rescaled sparse SYK interactions the quantum advantage goes as $\Gamma\sim N^{\frac{\alpha}{q}-\frac{1}{2}}$, where $\alpha$ is related to the connectivity and $N$ is the number of cells.

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