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arXiv · 2208.06199

Non-Gaussian work statistics at finite-time driving

Krissia Zawadzki·Anthony Kiely·Gabriel T. Landi·Steve Campbell
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Abstract

We study properties of the work distribution of a many-body system driven through a quantum phase transition in finite time. We focus on the non-Gaussianity of the distribution, which we characterize through two quantitative metrics: skewness and negentropy. In particular, we focus on the quantum Ising model and show that a finite duration of the ramp enhances the non-Gaussianity of the distribution for a finite size system. By examining the characteristics of the full distribution, we observe that there is a clear intermediate regime between the sudden quench and adiabatic limits, where the distribution becomes increasingly skewed.

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Krissia Zawadzki, Anthony Kiely, Gabriel T. Landi, Steve Campbell. 2022-08-12. Non-Gaussian work statistics at finite-time driving. https://doi.org/10.1103/physreva.107.012209

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