Pole-Based Approximation of the Fermi-Dirac Function∗∗∗∗
نویسندگان
چکیده
Two approaches for the efficient rational approximation of the Fermi-Dirac function are discussed: one uses the contour integral representation and conformal mapping, and the other is based on a version of the multipole representation of the Fermi-Dirac function that uses only simple poles. Both representations have logarithmic computational complexity. They are of great interest for electronic structure calculations.
منابع مشابه
Dedicated to Professor Andy Majda on the occasion of his 60th birthday POLE-BASED APPROXIMATION OF THE FERMI-DIRAC FUNCTION
Two approaches for the efficient rational approximation of the Fermi-Dirac function are discussed: one uses the contour integral representation and conformal mapping and the other is based on a version of the multipole representation of the Fermi-Dirac function that uses only simple poles. Both representations have logarithmic computational complexity. They are of great interest for electronic ...
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