Dispersion relations and sum rules for the ellipsometric function
β Scribed by T. Inagaki; H. Kuwata; A. Ueda
- Publisher
- Elsevier Science
- Year
- 1980
- Weight
- 62 KB
- Volume
- 96
- Category
- Article
- ISSN
- 0167-2584
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π SIMILAR VOLUMES
We analyze subtracted dispersion relations for meson correlators at finite baryon density and temperature. Such relations are needed for QCD sum rules. We point out the importance of scattering terms, as well as finite, well-defined subtraction constants. Both are necessary for consistency, in parti
## Abstract A complex response function describing a reaction of a multiβparticle system to a weak alternating external field is the boundary value of a Nevanlinna class function (i.e. a holomorphic function with nonβnegative imaginary part in the upper halfβplane). Attempts of direct calculations