While the functional renormalization group is a powerful theoretical method, the static approximation has been usually adopted in which the Matsubara frequency dependence of vertex functions is ignored. We propose a formalism beyond the static approximation with an efficient parameterization in the
Application of the numerical renormalization group method to the hubbard model in infinite dimensions
โ Scribed by O. Sakai; Y. Kuramoto
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 349 KB
- Volume
- 89
- Category
- Article
- ISSN
- 0038-1098
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
A research code has been written to solve an elliptic system of coupled non-linear partial differential equations of conservation form on a rectangularly shaped three-dimensional domain. The code uses the method of collocation of Gauss points with tricubic Hermite piecewise continuous polynomial bas
It is demonstrated that the real-space renormalization group approach is equivalent to an appropriate diophantine system of equations. The method is applied on several examples of the Ising model. There exist many papers and books concerning with different aspects of renormalization group (RG) appr