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dft_tools/triqs/gfs/refreq.hpp
Olivier Parcollet 0a1285405c [gfs] Lattice fourier, multivar G, curry, tail
- Add Fourier for lattice.
  - Add regular_bz_mesh, cyclic_lattice, and their FFT.

- rm freq_infty.
- The gf can now be evaluated on a tail_view, which result in composing the tail.
- Fix the following issue :
  g(om_) << g(om_ +1)
  will recompose the tail correctly.
- TODO : TEST THIS NEW FEATURE IN DETAIL.

- Work on singularity for G(x, omega)

 - Separate the factory for singularity from the data factory in gf.
 - overload assign_from_functoin (renamed).
 - Fix singularity_t and co in the gf (const issue).

- Clean tail, add tail_const_view
 - add m_tail for x -> tail on any mesh
 - test curry + fourier works on k
2014-10-18 21:20:35 +02:00

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2.4 KiB
C++

/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2012-2013 by O. Parcollet
*
* TRIQS is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
*
******************************************************************************/
#pragma once
#include "./tools.hpp"
#include "./gf.hpp"
#include "./local/tail.hpp"
#include "./meshes/segment.hpp"
#include "./evaluators.hpp"
namespace triqs {
namespace gfs {
struct refreq {};
template <typename Opt> struct gf_mesh<refreq, Opt> : segment_mesh {
template <typename... T> gf_mesh(T &&... x) : segment_mesh(std::forward<T>(x)...) {}
//using segment_mesh::segment_mesh;
};
// singularity
template <> struct gf_default_singularity<refreq, matrix_valued> {
using type = tail;
};
template <> struct gf_default_singularity<refreq, scalar_valued> {
using type = tail;
};
namespace gfs_implementation {
// h5 name
template <typename Singularity, typename Opt> struct h5_name<refreq, matrix_valued, Singularity, Opt> {
static std::string invoke() { return "ReFreq"; }
};
/// --------------------------- evaluator ---------------------------------
template <>
struct evaluator_fnt_on_mesh<refreq> TRIQS_INHERIT_AND_FORWARD_CONSTRUCTOR(evaluator_fnt_on_mesh,
evaluator_grid_linear_interpolation);
template <typename Singularity, typename Opt, typename Target> struct evaluator<refreq, Target, Singularity, Opt> : evaluator_one_var<refreq> {};
/// --------------------------- data access ---------------------------------
template <typename Opt> struct data_proxy<refreq, matrix_valued, Opt> : data_proxy_array<std::complex<double>, 3> {};
template <typename Opt> struct data_proxy<refreq, scalar_valued, Opt> : data_proxy_array<std::complex<double>, 1> {};
}
}
}