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Related Experiment Videos

Beyond Born-Oppenheimer: molecular dynamics through a conical intersection.

Graham A Worth1, Lorenz S Cederbaum

  • 1Department of Chemistry, King's College London, The Strand, London, WC2R 2LS, United Kingdom. graham.worth@kcl.ac.uk

Annual Review of Physical Chemistry
|May 1, 2004
PubMed
Summary

Nonadiabatic effects, crucial in physics and chemistry, lead to conical intersections. These intersections, where the Born-Oppenheimer approximation fails, enable efficient radiationless decay and unique molecular dynamics.

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Area of Science:

  • Quantum mechanics
  • Physical chemistry
  • Molecular dynamics

Background:

  • Nonadiabatic effects are significant in various physics and chemistry domains.
  • Electron-nucleus coupling can cause conical intersections between potential energy surfaces.
  • Conical intersections facilitate radiationless decay between electronic states.

Purpose of the Study:

  • To review the fundamental theory of conical intersections.
  • To present a model for classifying different types of conical intersections.
  • To demonstrate molecular system behavior at conical intersections using simulations.

Main Methods:

  • Theoretical review of nonadiabatic dynamics.
  • Development of a classification model for conical intersections.

Related Experiment Videos

  • Wavepacket dynamics simulations of molecular systems.

    • Main Results:

    • Conical intersections are key to understanding radiationless decay.
    • A model is provided to categorize conical intersections.
    • Simulations illustrate characteristic dynamics at conical intersections.

    Conclusions:

    • Nonadiabatic effects and conical intersections are vital for describing molecular processes.
    • The presented model aids in understanding intersection types.
    • Wavepacket dynamics simulations offer insights into molecular behavior at these critical points.