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Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

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A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
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Electrostatic Boundary Conditions in Dielectrics01:27

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When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
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Van der Waals Equation01:10

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The ideal gas law is an approximation that works well at high temperatures and low pressures. The van der Waals equation of state (named after the Dutch physicist Johannes van der Waals, 1837−1923) improves it by considering two factors.
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Gauss's law states that the electric flux through any closed surface equals the net charge enclosed within the surface. This law is beneficial for determining the expressions for the electric field for a particular charge distribution if the electric flux is known.
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变量量子本身在一个可偏化的嵌入式框架内解决了自我一致的场方法.

Erik Rosendahl Kjellgren1, Peter Reinholdt1, Aaron Fitzpatrick2

  • 1Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, DK-5230 Odense M, Denmark.

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PubMed
概括
此摘要是机器生成的。

我们介绍了极化嵌入-变量量子Eigensolver自相一致场 (PE-VQE-SCF) 算法,扩展了化学模拟的量子计算能力. 这种方法显示最小的计算开销和没有增加的噪声,使复杂化学反应的准确建模.

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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.
  • 量子化学是一种量子化学.

背景情况:

  • 变量量子Eigensolver自一致场 (VQE-SCF) 是用于电子结构计算的混合量子-经典算法.
  • 极化嵌入 (PE) 模型对于准确模拟化学环境至关重要,但通常仅限于经典计算.

研究的目的:

  • 扩展可极化嵌入 (PE) 方法到量子计算领域.
  • 开发和实施可极化嵌入-变量量子Eigensolver自相一致场 (PE-VQE-SCF) 算法.
  • 评估PE-VQE-SCF用于模拟化学系统的性能和适用性.

主要方法:

  • 制定和实施PE-VQE-SCF算法.
  • 在量子模拟器上测试算法.
  • 模拟 furan 和 ethene 之间的 Diels-Alder 反应屏障作为一个基准案例.

主要成果:

  • 与量子模拟器上的标准VQE-SCF相比,PE-VQE-SCF算法只显示门数略有增加.
  • 使用PE-VQE-SCF时没有观察到射击噪声的显著增加.
  • 该算法成功模拟了迪尔斯-阿尔德反应的反应屏障,证明了它对真实化学系统的潜力.

结论:

  • PE-VQE-SCF有效地将极化嵌入扩展到量子计算.
  • 该方法在计算上是高效的,并且在当前量子硬件上对噪声强大.
  • PE-VQE-SCF为复杂化学过程的精确量子模拟提供了一个有希望的方法.