出典:Wikipedia
出典:『Wikipedia』 (2011/06/13 17:09 UTC 版)
The random phase approximation (RPA) is an approximation method in condensed matter physics and in nuclear physics. It was first introduced by David Bohm and David Pines as an important result in a series of seminal papers. For decades physicists had been trying to incorporate the effect of microscopic quantum mechanical interactions between electrons in the theory of matter. Bohm and Pines RPA approximation accounts for the weak screened Coulomb interaction, and RPA is commonly used for describing the dynamic linear electronic response of electron systems.