10 citations · 20 across the 4 of their papers we have counts for
4 papers
Ladder equation for the three-particle vertex and its approximate solution
Patrick Kappl, Tin Ribic, Anna Kauch +1
We generalize the three two-particle Bethe-Salpeter equations to ten three-particle ladders. These equations are exact and yield the exact three-particle vertex, if we knew the thr…
A functional-analysis derivation of the parquet equation
Christian J. Eckhardt, Patrick Kappl, Anna Kauch +1
The parquet equation is an exact field-theoretic equation known since the 60s that underlies numerous approximations to solve strongly correlated Fermion systems. Its derivation pr…
Non-linear responses and three-particle correlators in correlated electron systems exemplified by the Anderson impurity model
Patrick Kappl, Friedrich Krien, Clemens Watzenböck +1
Three-particle correlators are relevant for, among others, Raman, Hall and non-linear responses. They are also required for the next order of approximations extending dynamical mea…
Statistical error estimates in dynamical mean-field theory and extensions thereof
Patrick Kappl, Markus Wallerberger, Josef Kaufmann +2
We employ the jackknife algorithm to analyze the propagation of the statistical quantum Monte Carlo error through the Bethe--Salpeter equation. This allows us to estimate the error…