57 citations · 171 across the 10 of their papers we have counts for
4 papers · 1 filter
Compressing local vertex functions from the multipoint numerical renormalization group using quantics tensor cross interpolation
Markus Frankenbach, Marc Ritter, Mathias Pelz +3
The multipoint numerical renormalization group (mpNRG) is a powerful impurity solver that provides accurate spectral data useful for computing local, dynamic correlation functions…
Two-particle calculations with quantics tensor trains: Solving the parquet equations
Stefan Rohshap, Marc K. Ritter, Hiroshi Shinaoka +3
We present the first application of quantics tensor trains (QTTs) and tensor cross interpolation (TCI) to the solution of a full set of self-consistent equations for multivariate f…
Benchmark Calculations of Multiloop Pseudofermion fRG
Marc K. Ritter, Dominik Kiese, Tobias Müller +4
The pseudofermion functional renormalization group (pffRG) is a computational method for determining zero-temperature phase diagrams of frustrated quantum magnets. In a recent meth…
Multiloop pseudofermion functional renormalization for quantum spin systems: Application to the spin- kagome Heisenberg model
Julian Thoenniss, Marc K. Ritter, Fabian B. Kugler +2
We present a multiloop pseudofermion functional renormalization group (pffRG) approach to quantum spin systems. As a test case, we study the spin- Heisenberg model on…