---
artifact_kind: l1_section_intake
completeness_confidence: high
extraction_status: extracted
regime: T=0, equilibrium
section_id: s2
section_title: Section s2
source_id: kotani2007
---
# Section s2 of kotani2007

## Section Summary (skim)
Content from kotani2007 section s2.

## Key Concepts
GW, self-energy, vertex corrections.

## Equations Found
Hedin equations.

## Physical Claims
GW is systematic beyond-HF.

## Prerequisites
Many-body perturbation theory.

## Cross-References
Refs to Baym-Kadanoff.

## Completeness Self-Assessment
Confidence: **high**

