A sparse sampling scheme derived from compact orthogonal bases dramatically reduces the number of imaginary-time and Matsubara-frequency points needed for accurate finite-temperature Green's function calculations.
Matsubara, A New Approach to Quantum-Statistical Mechanics, Progress of Theoretical Physics 14, 351 (1955)
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Sparse sampling approach to efficient ab initio calculations at finite temperature
A sparse sampling scheme derived from compact orthogonal bases dramatically reduces the number of imaginary-time and Matsubara-frequency points needed for accurate finite-temperature Green's function calculations.