Systematic Approximations to the Partition Function for Crystalline Solids
โ Scribed by Beyerlein, Adolph
- Book ID
- 121775203
- Publisher
- American Institute of Physics
- Year
- 1967
- Tongue
- English
- Weight
- 670 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0021-9606
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
We propose to approximate the many-body partition function for a system of interacting Fermions by summing static paths of the Hubbard-Stratonovich representation. We demonstrate with a simple two-level model that the approximation is superior to tinite temperature Hartree theory. Corrections to the
An explicit proof is given that no sequence of quasi-classical adiabatic approximations in which intrinsic symmetry re. strictions are relased in any way can give an approprhtely approximated partition function sm;Fller than the one diRctly obtainable in the absence of such a sequence.