Non-Gaussian work statistics at finite-time driving

• URL: http://arxiv.org/abs/2208.06199v2
• Date: Wed, 11 Jan 2023 20:31:39 GMT
• Title: Non-Gaussian work statistics at finite-time driving
• Authors: Krissia Zawadzki, Anthony Kiely, Gabriel T. Landi and Steve Campbell
• Abstract summary: 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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