发表机构
Lebedev Physical Institute, Russian Academy of Sciences; Skolkovo Institute of Science and Technology; National Research University Higher School of Economics（俄罗斯科学院列别杰夫物理研究所; 斯科尔科沃科学技术学院; 国立高等经济大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出利用局域和非局域量子淬火测量量子场系统关联函数的理论方案，以标量场为例展示其可行性，并适用于非高斯关联研究。
AI 中文摘要
我们提出了一种基于量子淬火来测量量子场系统中关联函数的理论方案。以有质量和无质量标量场理论为例，我们表明对系统的短期扰动会导致平均场的后续演化依赖于初始态的关联函数。通过考虑两种类型的扰动，即局域和非局域淬火，我们展示了在每种情况下可以测量哪些关联函数。所提出的方法可应用于研究非高斯关联。
英文摘要
We present a theoretical proposal for measuring correlation functions in a quantum field system based on the use of quantum quenches. Using the examples of massive and massless scalar field theories, we show that a short-term perturbation of the system leads to a dependence of the further evolution of the average field on the initial state's correlation functions. Considering two types of perturbations, namely local and nonlocal quenches, we show which correlation functions can be measured in each of these cases. The proposed procedure can be applied to study non-Gaussian correlations.
Comments10 pages, 5 figures, to be published in Physical Review D
