Chaotic Behaviour in Quantum Dynamics.

Abstract

Analytical and numerical results are presented on the mechanism of excitation and ionization of hydrogen atoms under microwave fields. In particular the existence is predicted of a critical value of the microwave field, the quantum delocalization border, above which the quantum packet delocalizes and strong excitation and ionization takes place. Below the quantum border, the packet is localized even though the correseponding classical system is chaotic and obeys a diffusion equation. These studies reveal some other unexpected new features of quantum dynamics which aslo could be observed in laboratory experiments and provides a quantum theory for subthreshold ionization. Keywords: Quantum Chaos; Energy Level Statistics; Quantum Kicked Rotator; Anderson Localization; Microwave Excitation of Hydrogen Atoms; Keldish Parameter; Quantum Diffusion; Italy.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1986
Accession Number
ADA178299

Entities

People

  • Giulio Casati
  • Italo Guarneri

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Computational Science
  • Computer Simulations
  • Continuous Spectra
  • Diffusion
  • Dynamics
  • Electric Fields
  • Electrons
  • Equations
  • Ionization
  • Molecular Mechanics Methods
  • Physics
  • Physics Laboratories
  • Probability Distributions
  • Quantum Chaos
  • Quantum Mechanics
  • Radiation
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Quantum Computing