A variational approch is proposed for the approximate description of decaying states represented by Gamow functions. The method is suited to describing many-particle systems with antisymmetry. It is shown that, in combination with a generator-coordinate basis, its actual application is as feasible a
New approach to perturbation theory of many-particle systems
β Scribed by C. J. Lambert; W. E. Hagston
- Publisher
- Springer
- Year
- 1984
- Tongue
- English
- Weight
- 911 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0020-7748
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π SIMILAR VOLUMES
The explicit semiclassical treatment of logarithmic perturbation theory for the bound-state problem within the framework of the Dirac equation is developed. Avoiding disadvantages of the standard approach in the description of exited states, new handy recursion formulae with the same simple form bot
## Abstract A derivation of hydrodynamic equations which describe diffusion in connection with reaction processes in manyβparticle systems is given on the basis of quantum kinetic theory. For this purpose kinetic equations are derived for a quantum gas with chemical reactions. Following Grad's meth