2 papers
math.NA2026
A Structure-Preserving LOBPCG Algorithm for the Bethe-Salpeter Eigenvalue Problem
Xinyu Shan, Meiyue Shao
The Bethe-Salpeter eigenvalue problem is a structured eigenvalue problem arising in many-body physics. In practice, a few of the smallest positive eigenvalues and the corresponding…
math.NA2024
A fast low-rank inversion algorithm of dielectric matrix in GW approximation
Zhengbang Zhou, Huanhuan Ma, Wentiao Wu +4
The dielectric response function and its inverse are crucial physical quantities in materials science. We propose an accurate and efficient strategy to invert the dielectric functi…