Physics – Quantum Physics
Scientific paper
2007-10-11
Proceedings of the Albert Einstein Century International Conference (Jul 18 - 22, 2005, Paris), and the International Conferen
Physics
Quantum Physics
5 pages, 2 figures
Scientific paper
10.1142/S0217979207045499
In this talk we present a model to demonstrate how time-periodic potential can be used to manipulate quantum metastability of a system. We study metastability of a particle trapped in a well with a time-periodically oscillating barrier in the Floquet formalism. It is shown that the oscillating barrier causes the system to decay faster in general. However, avoided crossings of metastable states can occur with the less stable states crossing over to the more stable ones. If in the static well there exists a bound state, then it is possible to stabilize a metastable state by adiabatically increasing the oscillating frequency of the barrier so that the unstable state eventually cross-over to the stable bound state. It is also found that increasing the amplitude of the oscillating field may change a direct crossing of states into an avoided one. Hence, one can manipulate the stability of different states in a quantum potential by a combination of adiabatic changes of the frequency and the amplitude of the oscillating barrier.
Ho Choon-Lin
Lee Chung-Chieh
No associations
LandOfFree
Stabilizing quantum metastable states in a time-periodic potential does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Stabilizing quantum metastable states in a time-periodic potential, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilizing quantum metastable states in a time-periodic potential will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-541659