Au extension of the usual system-size expansion method is given to study the relaxation and fluctuation from unstable and metastable states. The short-time and the long-time behavior of the moments y(t) and M,(t) and of the distribution function P(x, t) of a macrosco0ic variable x are investigated b
Relaxation from a metastable state due to quantum fluctuation
β Scribed by Hiroto Kobayashi; Naomichi Hatano; Akira Terai; Masuo Suzuki
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 630 KB
- Volume
- 226
- Category
- Article
- ISSN
- 0378-4371
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β¦ Synopsis
Relaxation from a metastable state is studied in a spin-boson model. We observe a large oscillation due to the interaction between a spin and bosons. The interaction dependence of the temporal behavior of the magnetization is also studied.
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