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Time evolution of tunneling and decoherence

✍ Scribed by Salgueiro, A. N.; de Toledo Piza, A. F. R.; Peixoto de Faria, J. G.; Nemes, M. C.

Book ID
120340309
Publisher
The American Physical Society
Year
2001
Tongue
English
Weight
124 KB
Volume
64
Category
Article
ISSN
1050-2947

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## Abstract Starting from the observation that at very low temperatures an isolated nanomagnet can be treated as an effective two‐state system, we introduce a model to study quantum tunnelling and decoherence phenomena. We assume that the total spin of the magnet interacts with a spin bath. We show