Comparison between equations-of-motion and green's function methods for the particle-hole response function

✍ Scribed by Francis S.M. Tsui; Karl F. Freed

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 787 KB
• Volume: 32
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)85141-4

✦ Synopsis

We show that, apart from a few differences;the equations-of-motion method of h ¶cKoy et al. provides the Ieading COTrection to the random phase approximation (with exchange). in ths fully renkmalized responx function (density-density correlation function). Thus, their equations-of-motion method is shown to be equivalent to a partial surruxation of infmite sets of terms in the perturbation expansion of the response function,