Cluster expansion of operator averages for systems of many particles
✍ Scribed by J. Da Providência
- Publisher
- Elsevier Science
- Year
- 1963
- Weight
- 463 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0029-5582
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📜 SIMILAR VOLUMES
Assuming the ground state wavefunction, #,, , of a boson fluid is known, and writing the excited state wavefunctions in the form F/J,, , a linear eigenvalue equation of the form l?F = tPF is obtained, where E0 + E is the excited state energy, E0 is the ground state energy, and His a non-hermitian op
## Abstract The many‐body expansion of the potential energy function of elemental clusters is examined in general terms in regard to its convergence for microclusters and the bulk phase. The systems Be~__n__~ and Li~__n__~ are examined in detail. For Li it is clear that the many‐body expansion has