多个体的亚亚流动通道:不稳定,混乱和量子经典对应
Anant Vijay Varma1,2, Amichay Vardi2,3, Doron Cohen1
1Ben-Gurion University of the Negev, Department of Physics, Beer Sheva, Israel.
Physical review letters
|February 21, 2025
概括
相互作用和纠显著影响相互作用玻色子中的亚亚巴特通道. 这项研究揭示了Bose-Hubbard链中的古典和量子混乱,使用刺激的拉曼亚亚巴特通道,通过多种模拟方法证实了这一点.
科学领域:
- 量子物理学的量子物理学
- 凝聚物质物理学 凝聚物质物理学
- 这是量子混沌.
背景情况:
- 阿迪亚巴斯通道对于量子控制至关重要,但对相互作用和纠很敏感.
- 斯-哈巴德链是研究相互作用玻色子和量子现象的关键模型.
- 量子系统中的混乱,特别是相互作用的多体系统中的混乱,仍然是研究的一个活跃领域.
研究的目的:
- 研究互动和纠对波斯 - 哈巴德链中的亚亚巴特通道的影响.
- 探索这些系统中古典和量子混乱的出现,在受刺激的拉曼离子通道协议下.
- 为了比较不同理论治疗的混沌的表现.
主要方法:
- 在斯-哈巴德链中对刺激的拉曼-阿迪亚巴特通道类方案的模拟.
- 分析低维混乱 (三站链) 和高维混乱 (三站以上) 的分析.
- 使用平均场经典处理,切断的维格纳半经典处理和完整的多体量子模拟.
主要成果:
- 斯 - 哈巴德链中的亚底巴斯通道动态显示出经典和量子混乱的明确指纹.
- 在低维 (三站式) 和高维 (多站式) 混沌制度中都观察到混乱.
- 这些混乱的签名在平均场,半古典和全量子模拟中始终存在.
结论:
- 相互作用和纠从根本上改变互动玻色子中的亚亚巴特通道,导致混乱的动态.
- 刺激的拉曼亚亚巴特通道协议可以有效地揭示Bose-Hubbard模型中的经典和量子混乱.
- 观察到的混乱是强大的,并且可以通过各种理论和计算方法始终检测到.
相关概念视频
Third Law of Thermodynamics
18.0K
A pure, perfectly crystalline solid possessing no kinetic energy (that is, at a temperature of absolute zero, 0 K) may be described by a single microstate, as its purity, perfect crystallinity,and complete lack of motion means there is but one possible location for each identical atom or molecule comprising the crystal (W = 1). According to the Boltzmann equation, the entropy of this system is zero.
18.0K
Stability of Equilibrium Configuration
420
Understanding the stability of equilibrium configurations is a fundamental part of mechanical engineering. In any system, there are three distinct types of equilibrium: stable, neutral, and unstable.
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
420
Entropy
28.6K
Salt particles that have dissolved in water never spontaneously come back together in solution to reform solid particles. Moreover, a gas that has expanded in a vacuum remains dispersed and never spontaneously reassembles. The unidirectional nature of these phenomena is the result of a thermodynamic state function called entropy (S). Entropy is the measure of the extent to which the energy is dispersed throughout a system, or in other words, it is proportional to the degree of disorder of a...
28.6K
First Law: Particles in One-dimensional Equilibrium
6.8K
Newton's first law of motion states that a body at rest remains at rest, or if in motion, remains in motion at constant velocity, unless acted on by a net external force. It also states that there must be a cause for any change in velocity (a change in either magnitude or direction) to occur. This cause is a net external force. For example, consider what happens to an object sliding along a rough horizontal surface. The object quickly grinds to a halt, due to the net force of friction. If...
6.8K
Entropy and the Second Law of Thermodynamics
2.7K
The second law of thermodynamics can be stated quantitatively using the concept of entropy. Entropy is the measure of disorder of the system.
The relation between entropy and disorder can be illustrated with the example of the phase change of ice to water. In ice, the molecules are located at specific sites giving a solid state, whereas, in a liquid form, these molecules are much freer to move. The molecular arrangement has therefore become more randomized. Although the change in average...
The relation between entropy and disorder can be illustrated with the example of the phase change of ice to water. In ice, the molecules are located at specific sites giving a solid state, whereas, in a liquid form, these molecules are much freer to move. The molecular arrangement has therefore become more randomized. Although the change in average...
2.7K
Entropy Change in Reversible Processes
2.5K
In the Carnot engine, which achieves the maximum efficiency between two reservoirs of fixed temperatures, the total change in entropy is zero. The observation can be generalized by considering any reversible cyclic process consisting of many Carnot cycles. Thus, it can be stated that the total entropy change of any ideal reversible cycle is zero.
The statement can be further generalized to prove that entropy is a state function. Take a cyclic process between any two points on a p-V diagram.
The statement can be further generalized to prove that entropy is a state function. Take a cyclic process between any two points on a p-V diagram.
2.5K


