论文标题
掺杂的Mott绝缘子中电荷载体之间吸引人的证据
Evidence of attraction between charge-carriers in a doped Mott insulator
论文作者
论文摘要
目前，光学捕获的超电原子气体的最新进展现在使得在掺杂的莫特绝缘子中访问显微镜的可观察物，后者是高温超导体的母体状态。这使得有关存在荷里载体之间的吸引力及其机制的温度尺度的长期问题是可能的。由于符号问题，在低温下无法在低温下获得可控的理论结果。在这项工作中，我们采用蠕虫 - 估计性蒙特卡洛（Monte Carlo）获得了莫特绝缘子中两个电荷载体的完全无偏见的结果。我们的方法可以比实验中目前可能的温度访问较低的温度，并为在超低原子系统中可行的温度尺度上的掺杂剂之间的吸引力提供了证据。我们还报告了在荷载载体存在下的自旋相关性，这些载体与实验直接相当。
Recent progress in optically trapped ultracold atomic gases is now making it possible to access microscopic observables in doped Mott insulators, which are the parent states of high-temperature superconductors. This makes it possible to address longstanding questions about the temperature scales at which attraction between charge carriers are present, and their mechanism. Controllable theoretical results for this problem are not available at low temperature due to the sign problem. In this work, we employ worm-algorithm Monte Carlo to obtain completely unbiased results for two charge carriers in a Mott insulator. Our method gives access to lower temperatures than what is currently possible in experiments, and provides evidence for attraction between dopants at a temperature scale that is now feasible in ultracold atomic systems. We also report on spin-correlations in the presence of charge carriers, which are directly comparable to experiments.
