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arXiv 2006.09044quant-phcond-mat.dis-nn
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基于强化学习的量子基态

Quantum Ground States from Reinforcement Learning

Ariel Barr, Willem Gispen, Austen Lamacraft

摘要:

寻找一个量子力学系统的基态可以用公式表示为一个最优控制问题。在这个公式中,最优控制过程的漂移被选择为匹配虚时薛定谔方程的解的Feynman-Kac(FK)表示中的路径分布。这提供了一种变分原理,其可用于漂移的神经表示的强化学习。我们的方法是一个下降的替代路径积分蒙特卡罗,学习FK轨迹的最佳重要性采样器。我们证明了我们的方法对单粒子、双粒子和多粒子物理学的几个问题的适用性。

英文摘要:

Finding the ground state of a quantum mechanical system can be formulated as an optimal control problem. In this formulation, the drift of the optimally controlled process is chosen to match the distribution of paths in the Feynman--Kac (FK) representation of the solution of the imaginary time Schrödinger equation. This provides a variational principle that can be used for reinforcement learning of a neural representation of the drift. Our approach is a drop-in replacement for path integral Monte Carlo, learning an optimal importance sampler for the FK trajectories. We demonstrate the applicability of our approach to several problems of one-, two-, and many-particle physics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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