电子机制,灭场驱动加热,如静态霍尔斯坦模型所示
Manuel Weber1,2,3, James K Freericks1
1Department of Physics, Georgetown University, Washington, D.C. 20057, USA.
Physical review letters
|July 14, 2023
概括
研究人员找到了一种方法来防止量子系统过热. 通过在动量空间中均地驱动电子,它们避免了电荷密度波链中的失控加热,从而导致异国情境.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子动力学 量子动力学是什么?
背景情况:
- 量子系统的时间依赖驱动可以创建异国情调的阶段.
- 多体相互作用往往导致失控的加热,导致无限温度状态.
研究的目的:
- 研究驱动量子系统中减缓或避免失控加热的机制.
- 探索如何将电子驱动到一个均的动量分布影响加热.
主要方法:
- 研究了由强大的直流电场驱动的相互作用电荷密度波链.
- 分析了微频段的发展及其分发功能.
主要成果:
- 在电荷密度波链中避免了失控的加热.
- 随着电流过早降至零,形成了具有非小的分布功能的微频段.
- 微波段的有效温度可以通过接近零温度共振的场强度调整 (正,负或近无限).
结论:
- 在动量空间中均的电子分布可以防止失控的加热.
- 在量子系统的预热状态下,与缓慢的玻色子模式相结合,可以实现非微不足道的元稳定分布函数.
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