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Symmetrical windowing for quantum states

Bag om Symmetrical windowing for quantum states

The quasi-classical (QC) approach embodies a simple methodology, based purely on classical mechanics, for modeling transitions between quantum states in atomic and molecular dynamics (MD) simulation. In the standard quasiclassical trajectory (QCT) simulation [4], molecular vibrational and/or rotational degrees of freedom (DOFs) are expressed in terms of classical actionangle variables, the action variables being classical generalized momenta serving as the classical analogues of the vibrational and/or rotational quantum numbers. "Quantization" is then accomplished by initializing classical trajectories with integer values of the action variables-i.e., at the quantum energy level of the initial state-and the final distribution of quantum states is obtained by accumulating the values of the classical action variables in "bins" (or histograms) of unit-width centered about the integer quantum values corresponding to the accessible quantum states.

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  • Sprog:
  • Engelsk
  • ISBN:
  • 9789972778865
  • Indbinding:
  • Paperback
  • Sideantal:
  • 124
  • Udgivet:
  • 3. august 2023
  • Størrelse:
  • 152x8x229 mm.
  • Vægt:
  • 192 g.
  • 2-4 uger.
  • 18. december 2024
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Beskrivelse af Symmetrical windowing for quantum states

The quasi-classical (QC) approach embodies a simple methodology, based purely on classical mechanics, for modeling transitions between quantum states in atomic and molecular dynamics (MD) simulation. In the standard quasiclassical
trajectory (QCT) simulation [4], molecular vibrational and/or rotational degrees of freedom (DOFs) are expressed in terms of classical actionangle variables, the action variables being classical generalized momenta serving as the classical analogues of the vibrational and/or rotational quantum numbers. "Quantization" is then accomplished by initializing classical trajectories
with integer values of the action variables-i.e., at the quantum energy level of the initial state-and the final distribution of quantum states is obtained by accumulating the values of the classical action variables in "bins" (or histograms) of unit-width centered about the integer quantum values corresponding to the accessible quantum states.

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