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相关概念视频

The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

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Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing...
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Quantum Numbers02:43

Quantum Numbers

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It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
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Hybridization of Atomic Orbitals I03:24

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The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
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Hybridization of Atomic Orbitals II03:35

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sp3d and sp3d 2 Hybridization
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The de Broglie Wavelength02:32

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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)01:19

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Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
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用量子计算机穿越希尔伯特空间

Tong Jiang1, Jinghong Zhang1, Moritz K A Baumgarten1

  • 1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.

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此摘要是机器生成的。

量子计算显示出化学系统模拟的前景. 本综述涵盖了计算化学中复杂任务采样的量子算法,包括蒙特卡洛方法和量子动力学.

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科学领域:

  • 量子计算是一种量子计算.
  • 计算化学是一种计算化学.
  • 化学物理 化学物理

背景情况:

  • 预计量子计算机将彻底改变化学系统计算.
  • 计算化学中的复杂采样任务,例如确定平衡和不平衡属性,对于经典计算机来说是计算密集的.

研究的目的:

  • 审查量子算法的最新进展,用于计算化学中的复杂采样任务.
  • 为基本状态,热状态属性和量子动力学计算提供量子算法的全面概述.

主要方法:

  • 复习量子算法,包括混合量子-经典和全量子方法.
  • 专注于蒙特卡罗方法:马尔科夫链蒙特卡罗,变量蒙特卡罗,投影机蒙特卡罗和路径积分蒙特卡罗.
  • 包括其他技术:量子选择配置相互作用,最小纠的典型热态,纠造,以及蒙特卡洛风味的林布拉迪动力学.

主要成果:

  • 各种量子算法及其经典对应的详细理论框架.
  • 在计算化学任务中讨论量子优势的潜力.
  • 识别化学模拟当前量子算法的挑战和局限性.

结论:

  • 量子算法,特别是基于蒙特卡洛的方法,为推进计算化学提供了巨大的潜力.
  • 需要进一步发展,以克服挑战,并充分实现化学系统模拟的量子计算优势.