Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1994-09-15
Fortschr. Phys. 43 (1995) 585
Physics
High Energy Physics
High Energy Physics - Theory
ITP.SUNYSB preprint Sep.,1994
Scientific paper
10.1002/prop.2190430702
The systematical studies on the dynamical approach of wavefunction collapse in quantum measurement are reported in this paper based on the Hepp-Coleman's model and its generalizations. Under certain physically reasonable conditions, which are easily satisfied by the practical problems, it is shown that the off-diagonal elements of the reduced density matrix vanish in quantum mechanical evolution process in the macroscopic limit with a very large particle number N. Various examples with detector made up of oscillators of different spectrum distribution are used to illustrate this observations . With the two-level system as an explicit illustration, the quantum information entropy is exactly obtained to quantitatively describe the degree of decoherence for the so-called partial coherence caused by detector. The entropy for the case with many levels is computed based on perturbation method in the limits with very large and very small N. As an application of this general approach for quantum measurement, a dynamical realization of the quantum Zeno effect are present to analyse its recent testing experiment in connection with a description of transition in quantum information entropy. Finally, the Cini's model for the correlation between the states of the measured system and the detector is generalized for the case with many energy-level.
No associations
LandOfFree
Quantum Dynamical Approach of Wavefunction Collapse in Measurement Process and Its Application to Quantum Zeno Effect 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 Quantum Dynamical Approach of Wavefunction Collapse in Measurement Process and Its Application to Quantum Zeno Effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Dynamical Approach of Wavefunction Collapse in Measurement Process and Its Application to Quantum Zeno Effect will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-533360