Time Dynamics in Chaotic Many-body Systems: Can Chaos Destroy a Quantum Computer?

  title={Time Dynamics in Chaotic Many-body Systems: Can Chaos Destroy a Quantum Computer?},
  author={Victor V. Flambaum},
  journal={Australian Journal of Physics},
  • V. Flambaum
  • Published 15 November 1999
  • Physics
  • Australian Journal of Physics
Highly excited many-particle states in quantum systems (nuclei, atoms, quantum dots, spin systems, quantum computers) can be ‘chaotic’ superpositions of mean-field basis states (Slater determinants, products of spin or qubit states). This is a result of the very high energy level density of many-body states which can be easily mixed by a residual interaction between particles. We consider the time dynamics of wave functions and increase of entropy in such chaotic systems. As an example, we… 

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