Some functional inequalities, with application to Green's function
β Scribed by J. M. Luttinger; R. Friedberg
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 378 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0003-9527
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π SIMILAR VOLUMES
The spectral representation of many-time Green's functions is generalized to Green's functions in which several operators may appear in normal order. The Heisenberg picture matrix elements are given for the Green's function having one external interaction line and one external quasi-particle line an
The best known upper bound on the permanent of a O-l matrix relies on the knowledge of the number of nonzero entries per row. In certain applications only the total number of nonzero entries is known. In order to derive bounds in this situation we prove that the function f:( -1, co) + l%, defined by