0


作为量子算盘珠的超冷原子气体

Ultracold atomic gases as quantum abacus beads
课程网址: http://videolectures.net/kolokviji_buljan_gases/  
主讲教师: Hrvoje Buljan
开课单位: 萨格勒布大学
开课时间: 2017-07-12
课程语种: 英语
中文简介:
当原子气体开始表现为量子流体时,可将其冷却至极低温度(绝对零度以上几纳米开尔文)。在过去的十年中,这些系统的物理特性已经大大提高,因为实验可以将这种超冷气体捕获在多种几何形状中,它们的相互作用可以调整,并且它们可以与环境隔离足够长的时间以保持其量子性质。这些进步为实验性地实现一维原子气体提供了可能性,使得它们表现为量子算盘珠。在某些情况下,许多粒子的这种奇特的量子系统在理论上可以被准确理解,而对于大多数量子系统来说情况并非如此。这为在理论上和实验上研究物质的强相关状态提供了前所未有的机会。我们将基于这些系统中的确切解决方案,对这些系统和我们选择的结果进行一般性介绍。最后,将证明除了探测低维量子气体外,这些系统还具有在三维以上实现模型的潜力。
课程简介: Atomic gases can be cooled down to extremely low temperatures (a few nano-Kelvin above absolute zero) when they start behaving as quantum fluids. The physics of these systems has advanced considerably over the past decade because experiments can trap such ultracold gases in versatile geometries, their interactions can be tuned, and they can be kept isolated from the environment for sufficiently long times to preserve their quantum nature. These advances have opened the possibility to experimentally realize one-dimensional atomic gases so that they behave as quantum abacus beads. Such peculiar quantum systems of many particles can in some cases be theoretically understood exactly, which is not the case for most quantum systems. This gives an unprecedented opportunity to investigate strongly correlated states of matter, in and out of equilibrium, both theoretically and experimentally. We will present a general introduction of these systems and our selected results based on exact solutions in these systems. Finally, it will be shown that besides probing low dimensional quantum gases, these systems hold the potential to realize models in more than three dimensions.
关 键 词: 原子气体; 量子流体; 量子算盘珠
课程来源: 视频讲座网
最后编审: 2019-05-12:cjy
阅读次数: 48