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Zeroth Law of Thermodynamics01:14

Zeroth Law of Thermodynamics

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Experimentally, if object A is in equilibrium with object B, and object B is in equilibrium with object C, then object A is in equilibrium with object C. That statement of transitivity is called the "zeroth law of thermodynamics." For example, a cold metal block and a hot metal block are both placed on a metal plate at room temperature. Eventually, the cold block and the plate will be in thermal equilibrium. In addition, the hot block and the plate will be in thermal equilibrium.
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Second Law of Thermodynamics02:49

Second Law of Thermodynamics

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In the quest to identify a property that may reliably predict the spontaneity of a process, a promising candidate has been identified: entropy. Processes that involve an increase in entropy of the system (ΔS > 0) are very often spontaneous; however, examples to the contrary are plentiful. By expanding consideration of entropy changes to include the surroundings, a significant conclusion regarding the relation between this property and spontaneity may be reached. In thermodynamic...
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Absorption of Radiation01:05

Absorption of Radiation

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The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
699
Gauss's Law01:07

Gauss's Law

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If a closed surface does not have any charge inside where an electric field line can terminate, then the electric field line entering the surface at one point must necessarily exit at some other point of the surface. Therefore, if a closed surface does not have any charges inside the enclosed volume, then the electric flux through the surface is zero. What happens to the electric flux if there are some charges inside the enclosed volume? Gauss's law gives a quantitative answer to this question.
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Thermodynamic Systems01:06

Thermodynamic Systems

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A thermodynamic system is a set of objects whose thermodynamic properties are of interest. The system is considered to be embedded in its surroundings or the environment. The system and its environment can exchange heat and do work on each other through a boundary that separates them. However, the immediate surroundings of the system interact with it directly and therefore have a much stronger influence on its behavior and properties.
Consider an example of  tea boiling in a kettle. The...
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Entropy and the Second Law of Thermodynamics01:20

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...
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Updated: May 29, 2025

Characterization of Thermal Transport in One-dimensional Solid Materials
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Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

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在远程交互系统中使用热面积法.

Donghoon Kim1, Tomotaka Kuwahara1,2,3, Keiji Saito4

  • 1RIKEN Center for Quantum Computing (RQC), Analytical Quantum Complexity RIKEN Hakubi Research Team, Wako, Saitama 351-0198, Japan.

Physical review letters
|February 6, 2025
PubMed
概括

量子物理学中的热面积定律适用于作为功率定律的相互作用衰变,具有临界指数αc=(D+1) / 2,其中D是空间维度. 这一发现即使在不稳定的制度中也是可靠的,并经过数值验证.

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Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere
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Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere

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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

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相关实验视频

Last Updated: May 29, 2025

Characterization of Thermal Transport in One-dimensional Solid Materials
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Characterization of Thermal Transport in One-dimensional Solid Materials

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Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere
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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

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科学领域:

  • 量子多体物理学 量子多体物理学
  • 量子信息理论 量子信息理论
  • 统计力学 统计力学

背景情况:

  • 对于双边信息的面积定律在量子多体物理学中是基本的.
  • 它普遍适用于在热平衡状态下与短距离相互作用的相互信息.
  • 热面积定律与功率定律衰变相互作用 (r^{-α}) 的条件尚不清楚.

研究的目的:

  • 确定热面积定律普遍有效性的最佳条件,特别是临界指数αc.
  • 为了研究热面积定律的稳定性,超越传统的边界相互作用论证.
  • 建立一个精确的标准,用于热面积规律在系统的功率规律衰变相互作用.

主要方法:

  • 分析子系统之间的边界相互作用大小.
  • 基于双边相关性功率定律衰减的最佳值αc = (D+1) / 2的推导.
  • 在可整合和不可整合系统中对衍生条件的数值验证.

主要成果:

  • 发现热面积定律的最佳值是αc = (D+1) /2,其中D是空间维度.
  • 这种条件非常稳定,即使在热力学不稳定的状态下 (α < D) 也持有.
  • 数字计算证实了这个标准对可整合和不可整合系统的定性准确性.
  • 发现同样的标准α > (D+1) / 2适用于量子纠的热面积定律,正如对数负值计算所示.

结论:

  • 热面积定律普遍适用于功率定律衰变相互作用,当α > (D+1) /2.2.
  • 这个标准比以前认为的更为普遍,包括不稳定的制度和各种系统类型.
  • 热面积定律的无条件证明是可以通过功率定律集群定理为α > D超过值温度.