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https://github.com/triqs/dft_tools
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20 lines
540 B
C++
20 lines
540 B
C++
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#include <triqs/gfs.hpp>
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using namespace triqs::gfs;
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int main() {
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double beta = 1, a = 1;
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int N = 10000;
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auto gw = gf<imfreq>{{beta, Fermion, N}, {1, 1}};
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auto gt = gf<imtime>{{beta, Fermion, N}, {1, 1}};
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triqs::clef::placeholder<0> om_;
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gw(om_) << 1 / (om_ - a);
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// fills a full *view* of gt with the contents of the FFT
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// NB : the mesh of gt *must* have the same size as the mesh of gw.
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gt() = inverse_fourier(gw);
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// make a new fresh gf, with the same size mesh, from the FFT of gt
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auto gw2 = make_gf_from_fourier(gt);
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}
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