The intrinsical character of the electronic correlation in an electron gas

Publication date: Available online 21 January 2019Source: Physics Letters AAuthor(s): Yu-Liang LiuAbstractBy introducing the phase transformation of electron operators, we map the equation of motion of an one-particle Green's function into that of a non-interacting one-particle Green's function where the electrons are moving in a time-depending scalar potential and pure gauge fields for a D-dimensional electron gas, and we demonstrate that the electronic correlation strength strongly depends upon the excitation energy spectrum and collective excitation modes of electrons. It naturally explains that the electronic correlation strength is strong in the one dimension, while it is weak in the three dimensions.

Source: Physics Letters A - January 22, 2019 Category: Physics Source Type: research