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The Pole Term in Linear Response Theory: An Example From the Transverse Response of the Electron Gas
In linear response theory, the dielectric response at zero frequency sometimes appears to violate the f-sum rule, which has apparent implications for causality. Here, we study the origin of this apparent discrepancy, focusing on Lindhard’s formula for the transverse response of the electron gas. At...
| Autores principales: | , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
2008
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4652879/ https://www.ncbi.nlm.nih.gov/pubmed/27096129 http://dx.doi.org/10.6028/jres.113.023 |