---
artifact_kind: l1_source_basis
core_sources: hedin1965, kotani2007, gruneis2014
peripheral_sources: biermann2015 (DMFT+GW, deferred to L2 query)
stage: L1
---
# Source Basis

## Core Sources
- hedin1965: Hedin 1965 foundational GW paper
- kotani2007: qsGW method
- gruneis2014: Vertex corrections

## Peripheral Sources
- biermann2015: DMFT+GW combination (deferred for now)

## Source Roles
hedin1965: Foundational. kotani2007: Direct dependency. gruneis2014: Direct dependency.

## Reading Depth
Full read for all core sources.

## Why Each Source Matters
Each provides one piece of the qsGW+vertex puzzle.

