Entropy decrease in Quantum Zeno Effect
Abstract
If a measurement process is regarded as an irreversible process, then by Second law of thermodynamics the entropy should increase after any measurement process. By the same spirit a quantum system undergoing repeated measurement should show strong irreversibility leading to entropy production. On the contrary we show that in quantum Zeno effect setting the entropy of a quantum system decreases and goes to zero after a large number of measurements. We discuss the entropy change under continuous measurement model and show that entropy can decrease if we use a more accurate measuring apparatus.
 Publication:

arXiv eprints
 Pub Date:
 June 2000
 arXiv:
 arXiv:quantph/0006089
 Bibcode:
 2000quant.ph..6089P
 Keywords:

 Quantum Physics
 EPrint:
 Latex file, 6 pages, no figures