gf_mesh<imfreq>
Synopsis:
class gf_mesh<imfreq>;
Matsubara frequency mesh
The class matsubara_freq_mesh is the implementation of a mesh of fermionic (\(\frac{(2n+1)\pi}{\beta}\)) or bosonic (\(\frac{2n\pi}{\beta}\)) Matsubara frequencies.
The mesh can span either only positive frequencies or both positive and negative frequencies (which is necessary for complex functions \(G(\tau)\)).
Pictorial representation of gf_mesh<imfreq>({beta, Fermion/Boson, 3, all_frequencies/positive_frequencies_only}). See
Member types
| Member type | Comment |
|---|---|
| domain_t | type of the domain: matsubara_domain<true> |
| index_t | type of the Matsubara index $n$ (as in $iomega_n$) |
| linear_index_t | type of the linear index |
| default_interpol_policy | |
| domain_pt_t | type of the domain point |
| mesh_point_t | Type of the mesh point |
| const_iterator | Iterating on all the points… |
Member functions
| Member function | Comment |
|---|---|
| constructor | constructor |
| domain | The corresponding domain |
| size | Size (linear) of the mesh of the window |
| full_size | Size (linear) of the mesh of the window |
| index_to_point | From an index of a point in the mesh, returns the corresponding point in the domain |
| index_to_linear | Flatten the index in the positive linear index for memory storage (almost trivial here). |
| linear_to_index | Reverse of index_to_linear |
| first_index | first Matsubara index |
| last_index | last Matsubara index |
| first_index_window | first Matsubara index of the window |
| last_index_window | last Matsubara index of the window |
| positive_only | Is the mesh only for positive omega_n (G(tau) real)) |
| operator[] | Accessing a point of the mesh from its index |
| is_within_boundary | Is the point in mesh ? |
Non Member functions
| Non member function | Comment |
|---|---|
| mpi_scatter | Scatter a mesh over the communicator c |
| mpi_gather | Opposite of scatter |
| h5_write | Write into HDF5 |
| h5_read | Read from HDF5 |