Hedin Equations, GW, GW+DMFT, and All That

Details Hedin Equations, GW, GW+DMFT, and All That Hedin Equations, GW, GW+DMFT, and All That

2011-09-19

arxiv.org/abs/1109.3972v1

Physics

Condensed Matter

Materials Science

To be published as a chapter of the Autumn School Hands-on LDA+DMFT, 4--7 October 2011, Forschungszentrum Juelich

Scientific paper

Historically, the GW approach was put forward by Hedin as the simplest approximation to the so-called Hedin equations. In Section 2, we will derive these Hedin equations from a Feynman-diagrammatical point of view. Section 3.1 shows how GW arises as an approximation to the Hedin equations. In Section 3.2, we briefly present some typical GW results for materials, including quasiparticle renormalizations, lifetimes, and band gap enhancements. In Section 4, the combination of GW and DMFT is summarized. Finally, as a prospective outlook, ab initio dynamical vertex approximation D$\Gamma$A is introduced in Section 5 as a unifying scheme for all that: GW, DMFT and non-local vertex correlations beyond.

Affiliated with

Also associated with

No associations

Rating

Hedin Equations, GW, GW+DMFT, and All That does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Hedin Equations, GW, GW+DMFT, and All That, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hedin Equations, GW, GW+DMFT, and All That will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-96468