167 citations · 1.2k across the 33 of their papers we have counts for
33 papers
Decomposing imaginary time Feynman diagrams using separable basis functions: Anderson impurity model strong coupling expansion
Jason Kaye, Zhen Huang, Hugo U. R. Strand +1
We present a deterministic algorithm for the efficient evaluation of imaginary time diagrams based on the recently introduced discrete Lehmann representation (DLR) of imaginary tim…
Dual Bethe-Salpeter equation for the multi-orbital lattice susceptibility within dynamical mean-field theory
Erik G. C. P. van Loon, Hugo U. R. Strand
Dynamical mean-field theory describes the impact of strong local correlation effects in many-electron systems. While the single-particle spectral function is directly obtained with…
Larmor precession in strongly correlated itinerant electron systems
Erik G. C. P. van Loon, Hugo U. R. Strand
Many-electron systems undergo a collective Larmor precession in the presence of a magnetic field. In a paramagnetic metal, the resulting spin wave provides insight into the correla…
Distinct spin and orbital dynamics in SrRuO
H. Suzuki, L. Wang, J. Bertinshaw +13
The unconventional superconductor SrRuO has long served as a benchmark for theories of correlated-electron materials. The determination of the superconducting pairing mecha…
Excitations and spectra from equilibrium real-time Green's functions
Xinyang Dong, Emanuel Gull, Hugo U. R. Strand
The real-time contour formalism for Green's functions provides time-dependent information of quantum many-body systems. In practice, the long-time simulation of systems with a wide…
libdlr: Efficient imaginary time calculations using the discrete Lehmann representation
Jason Kaye, Kun Chen, Hugo U. R. Strand
We introduce libdlr, a library implementing the recently introduced discrete Lehmann representation (DLR) of imaginary time Green's functions. The DLR basis consists of a collectio…