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 …

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 …

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 …

We present low-scaling algorithms for GW and constrained random phase approximation
based on a symmetry-adapted interpolative separable density fitting (ISDF) procedure that …

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 …

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 …

In this study, we combine the ab initio Migdal-Eliashberg approach with the intermediate
representation of the Green's function, enabling accurate and efficient calculations of the …

We theoretically investigate superconductivity under a spin-split band structure owing to a
collinear-type antiferromagnetic order in quasi-two-dimensional organic compounds κ …

We present a generalization of the discrete Lehmann representation (DLR) to three-point
correlation and vertex functions in imaginary time and Matsubara frequency. The …

Analytical continuation (AC) connects theoretical calculations and experimentally
measurable quantities. The recently proposed Nevanlinna AC method is capable of …