Quenched Pair Breaking by Interlayer Correlations as a Key to Superconductivity in

S Ryee, N Witt, TO Wehling - Physical Review Letters, 2024 - APS
The recent discovery of superconductivity in La 3 Ni 2 O 7 with T c≃ 80 K under high
pressure opens up a new route to high-T c superconductivity. This material realizes a bilayer …

Multiscale space-time ansatz for correlation functions of quantum systems based on quantics tensor trains

H Shinaoka, M Wallerberger, Y Murakami, K Nogaki… - Physical Review X, 2023 - APS
The correlation functions of quantum systems—central objects in quantum field theories—
are defined in high-dimensional space-time domains. Their numerical treatment thus suffers …

No superconductivity in PbCu(PO)O found in orbital and spin fluctuation exchange calculations

N Witt, L Si, JM Tomczak, K Held, TO Wehling - SciPost Physics, 2023 - scipost.org
Finding a material that turns superconducting under ambient conditions has been the goal of
over a century of research, and recently Pb $ _ {10-x} $ Cu $ _x $(PO $ _4 $) $ _6 $ O aka …

Low-Scaling Algorithms for GW and Constrained Random Phase Approximation Using Symmetry-Adapted Interpolative Separable Density Fitting

CN Yeh, MA Morales - Journal of Chemical Theory and …, 2024 - ACS Publications
We present low-scaling algorithms for GW and constrained random phase approximation
based on a symmetry-adapted interpolative separable density fitting (ISDF) procedure that …

Low-scaling algorithm for the random phase approximation using tensor hypercontraction with k-point sampling

CN Yeh, MA Morales - Journal of Chemical Theory and …, 2023 - ACS Publications
We present a low-scaling algorithm for the random phase approximation (RPA) with k-point
sampling in the framework of tensor hypercontraction (THC) for electron repulsion integrals …

Nonlocal corrections to dynamical mean-field theory from the two-particle self-consistent method

N Martin, C Gauvin-Ndiaye, AMS Tremblay - Physical Review B, 2023 - APS
Theoretical methods that are accurate for both short-distance observables and long-
wavelength collective modes are still being developed for the Hubbard model. Here, we …

Fulde-Ferrell-Larkin-Ovchinnikov state induced by antiferromagnetic order in -type organic conductors

S Sumita, M Naka, H Seo - Physical Review Research, 2023 - APS
We theoretically investigate superconductivity under a spin-split band structure owing to a
collinear-type antiferromagnetic order in quasi-two-dimensional organic compounds κ …

Bosonic Nevanlinna analytic continuation

K Nogaki, H Shinaoka - Journal of the Physical Society of Japan, 2023 - journals.jps.jp
Analytical continuation (AC) connects theoretical calculations and experimentally
measurable quantities. The recently proposed Nevanlinna AC method is capable of …

Spin Hall conductivity in the Kane-Mele-Hubbard model at finite temperature

D Lessnich, C Gauvin-Ndiaye, R Valentí… - Physical Review B, 2024 - APS
The Kane-Mele model is known to show a quantized spin Hall conductivity at zero
temperature. Including Hubbard interactions at each site leads to a quantum phase …

Feynman diagrammatics based on discrete pole representations: A path to renormalized perturbation theories

D Gazizova, L Zhang, E Gull, JPF LeBlanc - Physical Review B, 2024 - APS
By merging algorithmic Matsubara integration with discrete pole representations we present
a procedure to generate fully analytic closed form results for impurity problems at fixed …