loos
/
SRGGW
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Compare commits

base: loos:183dd42a5a81acf2f36e195af68b998abba3e48d
Branches Tags
loos:master
...
compare: loos:814fdecfd50f97cdd5b75c89089728f1d624643d
Branches Tags
loos:master

2 Commits
183dd42a5a ... 814fdecfd5

Author SHA1 Message Date
Pierre-Francois Loos 814fdecfd5 resolving conflict 2023-03-10 11:44:35 +01:00
Pierre-Francois Loos b66983a53e OK with conclusion 2023-03-10 11:43:24 +01:00
1 changed files with 1 additions and 1 deletions
Show Stats Expand all files Collapse all files

2
Manuscript/SRGGW.tex
View File

@ -918,7 +918,7 @@ The present manuscript applies the similarity renormalization group (SRG) to the
The problems caused by intruder states in many-body perturbation theory are numerous but here we focus on the convergence issues caused by them.
SRG's central equation is the flow equation, which is usually solved numerically but can be solved analytically for low perturbation order.
Applying this approach in the $GW$ context yields analytical renormalized expressions for the Fock matrix elements and the screened two-electron integrals.
Applying this approach in the $GW$ context yields closed-form renormalized expressions for the Fock matrix elements and the screened two-electron integrals.
These renormalized quantities lead to a regularized $GW$ quasiparticle equation, referred to as SRG-$GW$, which is the main result of this work.
By isolating the static component of SRG-$GW$, we obtain an alternative Hermitian and intruder-state-free self-energy that can be used in the context of qs$GW$ calculations.