85 citations · 89 across the 4 of their papers we have counts for
4 papers
Denoising of Imaginary Time Response Functions with Hankel projections
Yang Yu, Alexander F. Kemper, Chao Yang +1
Imaginary-time response functions of finite-temperature quantum systems are often obtained with methods that exhibit stochastic or systematic errors. Reducing these errors comes at…
Denoising and Extension of Response Functions in the Time Domain
Alexander F. Kemper, Chao Yang, Emanuel Gull
Response functions of quantum systems, such as electron Green's functions, magnetic, or charge susceptibilities, describe the response of a system to an external perturbation. They…
Solving a Class of Infinite-Dimensional Tensor Eigenvalue Problems by Translational Invariant Tensor Ring Approximations
Roel Van Beeumen, Lana Periša, Daniel Kressner +1
We examine a method for solving an infinite-dimensional tensor eigenvalue problem , where the infinite-dimensional symmetric matrix exhibits a translational invariant…
Accelerating Atomic Orbital-based Electronic Structure Calculation via Pole Expansion and Selected Inversion
Lin Lin, Mohan Chen, Chao Yang +1
We describe how to apply the recently developed pole expansion and selected inversion (PEXSI) technique to Kohn-Sham density function theory (DFT) electronic structure calculations…