Qian-Heng Duan, Ping-Xing Chen, Wei Wu. Adiabatic Conditions and the Uncertainty Relation
Submitted on: Sep 16, 2012, 16:04:30
Natural Sciences / Physics / Quantum field theory
Description: The condition for adiabatic approximation are of basic importance for the applications of the adiabatic theorem. The traditional quantitative condition was found to be necessary but not sufficient, but we do not know its physical meaning and the reason why it is necessary from the physical point of view. In this work, we relate the adiabatic theorem to the uncertainty relation, and present a clear physical picture of the traditional quantitative condition. It is shown that the quantitative condition is just the amplitude of the probability of transition between two levels in the time interval which is of the order of the time uncertainty of the system. We also present a new sufficient condition with clear physical picture.
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