Prefer a chat interface with context about you and your work?
Multipole representation of the Fermi operator with application to the electronic structure analysis of metallic systems
We propose a multipole representation of the Fermi-Dirac function and the Fermi operator and use this representation to develop algorithms for electronic structure analysis of metallic systems. The algorithm is quite simple and efficient. Its computational cost scales logarithmically with $\ensuremath{\beta}\ensuremath{\Delta}ϵ$ where $\ensuremath{\beta}$ is the inverse temperature and $\ensuremath{\Delta}ϵ$ is …