Quantifying fermionic decoherence in many-body systems.

  title={Quantifying fermionic decoherence in many-body systems.},
  author={Arnab Kar and Ignacio Franco},
  journal={The Journal of chemical physics},
  volume={146 21},
  • Arnab Kar, I. Franco
  • Published 5 June 2017
  • Chemistry, Physics, Medicine
  • The Journal of chemical physics
Practical measures of electronic decoherence, called distilled purities, that are applicable to many-body systems are introduced. While usual measures of electronic decoherence such as the purity employ the full N-particle density matrix which is generally unavailable, the distilled purities are based on the r-body reduced density matrices (r-RDMs) which are more accessible quantities. The r-body distilled purities are derivative quantities of the previously introduced r-body reduced purities… 
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