156 citations · 630 across the 12 of their papers we have counts for
12 papers
Leading-logarithmic approximation by one-loop renormalization group within Matsubara formalism
Jan Diekmann, Severin G. Jakobs
We demonstrate how to devise a Matsubara-formalism-based one-loop approximation to the flow of the functional renormalization group (FRG) that reproduces identically the leading-lo…
Parquet approximation and one-loop renormalization group: Equivalence on the leading-logarithmic level
Jan Diekmann, Severin G. Jakobs
We investigate the functional renormalization group (FRG) flow of the two-particle vertex function of a model for X-ray absorption in metals. Concerning the appearance of logarithm…
Renormalization group flow of the Luttinger-Ward functional: conserving approximations and application to the Anderson impurity model
Jan Frederik Rentrop, Volker Meden, Severin Georg Jakobs
We study the renormalization group flow of the Luttinger-Ward functional and of its two-particle irreducible vertex functions, given a cut-off in the two-particle interaction. We d…
Two-particle irreducible functional renormalization group schemes---a comparative study
Jan Frederik Rentrop, Severin Georg Jakobs, Volker Meden
We derive functional renormalization group schemes for Fermi systems which are based on the two-particle irreducible approach to the quantum many-body problem. In a first step, the…
Non-equilibrium transport through a Josephson quantum dot
Jan F. Rentrop, Severin G. Jakobs, Volker Meden
We study the electronic current through a quantum dot coupled to two superconducting leads which is driven by either a voltage or temperature bias. Finite biases beyond th…
Functional renormalization group study of the Anderson--Holstein model
M. A. Laakso, D. M. Kennes, S. G. Jakobs +1
We present a comprehensive study of the spectral and transport properties in the Anderson--Holstein model both in and out of equilibrium using the functional renormalization group…