68 citations · 70 across the 3 of their papers we have counts for
3 papers
cond-mat.str-el2026
Quantics tensor cross interpolation for high-order strong-coupling expansions
Kanghyeon Kim, Lei Geng, Philipp Werner +1
Real-time impurity solvers enable the study of transport phenomena and the description of nonequilibrium lattice systems within the framework of dynamical mean-field theory (DMFT).…
cond-mat.str-el2025★ 2 cited
Third-order strong-coupling impurity solver for real-frequency DMFT: Accurate spectral functions for antiferromagnetic and photo-doped states
Lei Geng, Aaram J. Kim, Philipp Werner
We present a real-frequency third-order strong-coupling impurity solver which employs quantics tensor cross interpolation (QTCI) for an efficient evaluation of the diagram weights.…
cond-mat.str-el2007★ 68 cited
Continuous-Time Quantum Monte Carlo Method for the Coqblin-Schrieffer Model
J. Otsuki, H. Kusunose, P. Werner +1
An impurity solver based on a continuous-time quantum Monte Carlo method is developed for the Coqblin-Schrieffer model. The Monte Carlo simulation does not encounter a sign problem…