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arXiv · 2309.00151

Notes on a non-thermal fluctuation-dissipation relation in quantum Brownian motion

Xinyi Chen-Lin
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Abstract

We review how unitarity and stationarity in the Schwinger-Keldysh formalism naturally lead to a (quantum) generalized fluctuation-dissipation relation (gFDR) that works beyond thermal equilibrium. Non-Gaussian loop corrections are also presented. Additionally, we illustrate the application of this gFDR in various scenarios related to quantum Brownian motion and the generalized Langevin equation.

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Xinyi Chen-Lin. 2023-08-31. Notes on a non-thermal fluctuation-dissipation relation in quantum Brownian motion. https://arxiv.org/abs/2309.00151

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