中国物理B ›› 2016, Vol. 25 ›› Issue (1): 13104-013104.doi: 10.1088/1674-1056/25/1/013104

所属专题: TOPICAL REVIEW — 8th IUPAP International Conference on Biological Physics

• TOPICAL REVIEW—8th IUPAP International Conference on Biological Physics • 上一篇    下一篇

Ab initio path-integral molecular dynamics and the quantum nature of hydrogen bonds

Yexin Feng(冯页新), Ji Chen(陈基), Xin-Zheng Li(李新征), Enge Wang(王恩哥)   

  1. 1. International Center for Quantum Materials and School of Physics, Peking University, Beijing 100871, China;
    2. School of Physics, Peking University, Beijing 100871, China;
    3. Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
  • 收稿日期:2015-05-21 出版日期:2016-01-05 发布日期:2016-01-05
  • 通讯作者: Xin-Zheng Li E-mail:xzli@pku.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11275008, 91021007, and 10974012) and the China Postdoctoral Science Foundation (Grant No. 2014M550005).

Ab initio path-integral molecular dynamics and the quantum nature of hydrogen bonds

Yexin Feng(冯页新)1, Ji Chen(陈基)1, Xin-Zheng Li(李新征)2,3, Enge Wang(王恩哥)1,3   

  1. 1. International Center for Quantum Materials and School of Physics, Peking University, Beijing 100871, China;
    2. School of Physics, Peking University, Beijing 100871, China;
    3. Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
  • Received:2015-05-21 Online:2016-01-05 Published:2016-01-05
  • Contact: Xin-Zheng Li E-mail:xzli@pku.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11275008, 91021007, and 10974012) and the China Postdoctoral Science Foundation (Grant No. 2014M550005).

摘要:

The hydrogen bond (HB) is an important type of intermolecular interaction, which is generally weak, ubiquitous, and essential to life on earth. The small mass of hydrogen means that many properties of HBs are quantum mechanical in nature. In recent years, because of the development of computer simulation methods and computational power, the influence of nuclear quantum effects (NQEs) on the structural and energetic properties of some hydrogen bonded systems has been intensively studied. Here, we present a review of these studies by focussing on the explanation of the principles underlying the simulation methods, i.e., the ab initio path-integral molecular dynamics. Its extension in combination with the thermodynamic integration method for the calculation of free energies will also be introduced. We use two examples to show how this influence of NQEs in realistic systems is simulated in practice.

关键词: ab initio calculations, isotope, molecular dynamics, hydrogen bonds

Abstract:

The hydrogen bond (HB) is an important type of intermolecular interaction, which is generally weak, ubiquitous, and essential to life on earth. The small mass of hydrogen means that many properties of HBs are quantum mechanical in nature. In recent years, because of the development of computer simulation methods and computational power, the influence of nuclear quantum effects (NQEs) on the structural and energetic properties of some hydrogen bonded systems has been intensively studied. Here, we present a review of these studies by focussing on the explanation of the principles underlying the simulation methods, i.e., the ab initio path-integral molecular dynamics. Its extension in combination with the thermodynamic integration method for the calculation of free energies will also be introduced. We use two examples to show how this influence of NQEs in realistic systems is simulated in practice.

Key words: ab initio calculations, isotope, molecular dynamics, hydrogen bonds

中图分类号:  (Ab initio calculations)

  • 31.15.A-
67.63.-r (Hydrogen and isotopes) 71.15.Pd (Molecular dynamics calculations (Car-Parrinello) and other numerical simulations) 82.30.Rs (Hydrogen bonding, hydrophilic effects)