Quantum Mechanics

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In my current opinion, each of the three alternative dynamical equations

  •     equation for the density matrix
  •     Heisenberg equations for the operators
  •     Feynman’s path integral

is more pedagogical when it comes to the understanding of the actual relationship between quantum mechanics and classical physics.

— Density matrix and its classical counterpart

— Lubos Motl

2012.09.08 Saturday ACHK