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sparse-ir

Basic theory

Intermediate representation (IR)
Sparse sampling

Reference

API reference
Additional material

Sample codes

Transformation from/to IR
Sparse sampling
Second-order perturbation
The GF2 & GW method
FLEX approximation
TPSC approximation
Eliashberg equation for Holstein Hubbard model
Lichtenstein formula

Analytic continuation

Numerical analytic continuation
SpM analytic continuation
Nevanlinna analytic continuation

Sample codes (Julia)

Transformation from/to IR
FLEX approximation

Sample codes (Fortran)

Second-order perturbation (Fortran)

Reference

Citation
Bibliograpy

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Lichtenstein formula

Lichtenstein formula#

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Eliashberg equation for Holstein Hubbard model

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Numerical analytic continuation

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