Dynamics of fluctuations for quantum lattice systems
β Scribed by D. Goderis; A. Verbeure; P. Vets
- Publisher
- Springer
- Year
- 1990
- Tongue
- English
- Weight
- 683 KB
- Volume
- 128
- Category
- Article
- ISSN
- 0010-3616
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π SIMILAR VOLUMES
We consider a class of unbounded spin systems (containing, in particular, anharmonic classical crystals) and construct the stochastic dynamics in the space of macroscopic fluctuations starting from a given microscopic stochastic time evolution.
An analytical approach, based on the unitary transformation method, has been developed to study the effect of quantum lattice fluctuations on the ground state of a model electron-phonon system. To study nonadiabatic case, the Green's function method is used to implement the perturbation treatment. T