- 96-555 Kwapien J., Slomczynski W., Zyczkowski K.
- Coherent States Measurement Entropy
Nov 5, 96
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Abstract. Coherent states (CS) quantum entropy can be split into two components.
The dynamical entropy is linked with the dynamical properties of a quantum
system. The measurement entropy, which tends to zero in the semiclassical
limit, describes the unpredictability induced by the process of a quantum
approximate measurement. We study the CS--measurement entropy for spin
coherent states defined on the sphere discussing different methods dealing
with the time limit $n \to \infty$. In particular we propose an effective
technique of computing the entropy by iterated function systems. The
dependence of CS--measurement entropy on the character of the partition of
the phase space is analysed.