144 citations · 267 across the 11 of their papers we have counts for
5 papers · 1 filter
Minimal pole representation and analytic continuation of matrix-valued correlation functions
Lei Zhang, Yang Yu, Emanuel Gull
We present a minimal pole method for analytically continuing matrix-valued imaginary frequency correlation functions to the real axis, enabling precise access to off-diagonal eleme…
Pairing boost from enhanced spin-fermion coupling in the pseudogap regime
Yang Yu, Sergei Iskakov, Emanuel Gull +2
We perform a fluctuation analysis of the pairing interaction in the hole-doped Hubbard model within the dynamical cluster approximation. Our analysis reveals that spin-fluctuation-…
Green/WeakCoupling: Implementation of fully self-consistent finite-temperature many-body perturbation theory for molecules and solids
Sergei Iskakov, Chia-Nan Yeh, Pavel Pokhilko +10
The accurate ab initio simulation of molecules and periodic solids with diagrammatic perturbation theory is an important task in quantum chemistry, condensed matter physics, and ma…
Large Exciton Binding Energy in the Bulk van der Waals Magnet CrSBr
Shane Smolenski, Ming Wen, Qiuyang Li +13
Excitons, bound electron-hole pairs, influence the optical properties in strongly interacting solid state systems. Excitons and their associated many-body physics are typically mos…
Unambiguous fluctuation decomposition of the self-energy: pseudogap physics beyond spin fluctuations
Yang Yu, Sergei Iskakov, Emanuel Gull +2
Correlated electron systems may give rise to multiple effective interactions whose combined impact on quasiparticle properties can be difficult to disentangle. We introduce an unam…