63 citations · 607 across the 21 of their papers we have counts for
3 papers · 1 filter
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…
Non-perturbative intertwining between spin and charge correlations: A "smoking gun" single-boson-exchange result
Severino Adler, Friedrich Krien, Patrick Chalupa-Gantner +2
We study the microscopic mechanism controlling the interplay between local charge and local spin fluctuations in correlated electron systems via a thorough investigation of the gen…
The plain and simple parquet approximation: single- and multi-boson exchange in the two-dimensional Hubbard model
Friedrich Krien, Anna Kauch
The parquet approach to vertex corrections is unbiased but computationally demanding. Most applications are therefore restricted to small cluster sizes or rely on various simplifyi…