Initial Decoherence of Open Quantum Systems
Vladimir Privman · 2002
We present a new short-time approximation scheme for evaluation of decoher-ence. At low temperatures, the approximation is argued to apply at intermediate times as well. It then provides a tractable approach complementary to Markovian-type approximations, and appropriate for evaluation of deviations from pure states in quantum computing models. KEY WORDS: Decoherence; thermalization; relaxation; open quantum systems.