Work

Partial fraction decomposition of the Fermi function

Year: 2009

Type: article

Abstract: A partial fraction decomposition of the Fermi function resulting in a finite sum over simple poles is proposed. This allows for efficient calculations involving the Fermi function in various contexts of electronic-structure or electron-transport theories. The proposed decomposition converges in a well-defined region faster than exponential and is thus superior to the standard Matsubara expansion.

Source: Physical Review B

DOI: 10.1103/physrevb.80.073102

Authors: Alexander Croy, Ulf Saalmann

Institution: Max Planck Institute for the Physics of Complex Systems

Language: English

Topic: Thermodynamic and Structural Properties of Metals and Alloys

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2040530471

FWCI: 6.66

Cites: 10

Cited by: 42

Related to: 10