在非赫尔密斯系统中连续体中的双粒子束状态的命运
Yanxia Liu1, Shu Chen2,3
1School of Physics and Astronomy, Yunnan Key Laboratory for Quantum Information, <a href="https://ror.org/0040axw97">Yunnan University</a>, Kunming 650091, People's Republic of China.
Physical review letters
|November 22, 2024
概括
我们在一个独特的网格中发现了连续体 (BIC) 中的两颗粒子结合状态. 非互惠的跳跃缩小了BIC区域,揭示了两个不同的BIC类型,具有不同的空间分布.
科学领域:
- 量子力学就是量子力学.
- 凝聚物质物理学 凝聚物质物理学
- 多体物理学的多体物理学.
背景情况:
- 连续体中的受限状态 (BIC) 是独特的量子现象,局部状态与扩展连续体状态共存.
- 非互惠的网格,粒子运动在相反的方向上有所不同,在量子系统中引入复杂的行为.
- 在交互系统中理解BIC对于开发新型量子设备至关重要.
研究的目的:
- 为了研究连续体 (BICs) 中二粒子结合状态的存在和属性,在一个一维交互的非互惠格子中.
- 分析非互惠跳跃对BIC移位和稳定性的影响.
- 识别和描述不同类型的BIC及其分解机制.
主要方法:
- 使用贝特-安萨茨方法对波函数和固有值的精确解决方案.
- 对BIC的相位图进行分析.
- 波函数分析以了解空间分布和分解值.
主要成果:
- 在研究的格子中证实了连续体 (BIC) 中存在两个粒子结合状态的存在.
- 发现非互惠的跳跃将绑定状态移位,导致BIC区域减少.
- 确定了两种具有明显空间分布的BIC类型,并通过分析推导出它们的分解值.
结论:
- 这项研究成功地证明了非互惠网格中存在双粒子BIC的存在,突出了非互惠性的重要作用.
- 这些发现为理解和控制复杂量子系统中的BIC提供了理论框架.
- 在具有杂质潜力的系统中观察到类似的BIC特性,这表明应用范围更广.
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