Physics – Quantum Physics
Scientific paper
1998-03-08
Physics
Quantum Physics
12 pages, latex, no figures, paper presented at the International Symposium on UNCERTAIN REALITY, New Delhi, India, Jan. 5-9,
Scientific paper
Protective measurement, which was proposed as a method of observing the wavefunction of a single system, is extended to the observation of the density matrix of a single system. d'Espagnat's definition of `proper mixture' is shown to be improper because it does not allow for appropriate fluctuations. His claim that there could be different mixtures corresponding to the same density matrix is critically examined. These results provide a new meaning to the density matrix, which gives it the same ontological status as the wavefunction describing a pure state. This also enables quantum entropy to be associated with a single system.
Aharonov Yakir
Anandan Jeeva
No associations
LandOfFree
Meaning of the Density Matrix does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Meaning of the Density Matrix, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Meaning of the Density Matrix will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-30727