Stochastic quantization of the nonlinear sigma model and the background field method
โ Scribed by E. Abdalla; F. M. Carvalho Filho; Ricardo L. Viana
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 402 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0020-7748
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๐ SIMILAR VOLUMES
We apply the coupled cluster method (CCM) to the Hamiltonian version of the latticised O(4) nonlinear sigma model. The method, which was initially developed for the accurate description of quantum many-body systems, gives rise to two distinct approximation schemes. These approaches are compared with
A new method of the generation of Green's function in external local and bilocal fields is proposed for the stochastic quantization of the 2D Hubbard model. The differential equations for Green's functions transform to the system of integral equations and it is solved numerically for a local Hubbard