0006089v1

related topics
{measurement, state, measurements}
{information, entropy, channel}
{time, decoherence, evolution}
{time, wave, function}
{energy, gaussian, time}
{time, systems, information}
{temperature, thermal, energy}
{phase, path, phys}
{cos, sin, state}

Entropy decrease in Quantum Zeno Effect

Arun K. Pati

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.

oai_identifier:
oai:arXiv.org:quant-ph/0006089
categories:
quant-ph
comments:
Latex file, 6 pages, no figures
arxiv_id:
quant-ph/0006089
created:
2000-06-20

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