triqs_modest.embedding.Embedding

class triqs_modest.embedding.Embedding

The embedding class.

The embedding class encodes the mapping between impurities and the correlated space \(\mathcal{C}\) (cf. ModEST implementation notes). In particular, it maps the individual “blocks” within an impurity self-energy to a block and spin of the embedded self-energy function, which can then be upfolded (downfolded) to obtain the lattice self-energy and the local Green’s function.

Dispatched C++ constructor(s).

[1] (sigma_embed_decomposition: [int],
     imp_decompositions: [[int]],
     psi: ndarray[ImpBlockT, 2],
     sigma_names: [str])

[2] ()

[1] Construct an embedding object.

[2] Default constructor for reading from HDF5.

Parameters:

sigma_embed_decomposition[int]: Decomposition (list of block sizes) for \(\Sigma_{\text{embed}}\): \([ \alpha ] =\) block size. Note that the decompositions are given for \(\alpha\), \(\gamma\) index, and are independent of \(\sigma\).
imp_decompositions[[int]]: List of decomposition of solvers: [n_imp][\(\gamma\)] = block size.
psindarray[ImpBlockT, 2]: The mapping \(\psi[\alpha,\sigma]\) -> n_imp, \(\gamma\), \(\tau\).
sigma_names[str]: Names for the values of the \(\sigma\) index (e.g., “up”, “down”).

Attributes

`get_psi`	The mapping table \(\psi\).
`imp_block_shape`	Gf block structure for the impurity solvers.
`n_alpha`	Number of blocks in \(\alpha\) for the \(\Sigma_{\text{embed}}\).
`n_impurities`	Number of impurities.
`n_sigma`	Number of blocks in \(\sigma\) for the \(\Sigma_{\text{embed}}\).
`sigma_names`	The names of the sigma indices.

Methods

`description`	Summarize the embedding object.
`drop`	Remove an impurity from the embedding table \(\psi\).
`embed`	Embed single-particle quantities (TRIQS/ModEST).
`embed_1p`	Embed single-particle quantities (CoQui).
`embed_2p`	Embed two-particle quantities (CoQui).
`embed_tensor`	Embed tensors (CoQui).
`extract`	Extract single-particle quantities (TRIQS/ModEST).
`extract_1p`	Extract single-particle quantities (CoQui).
`extract_2p`	Extract two-particle quantities (CoQui).
`extract_tensor`	Extract tensors (CoQui).
`flip_spin`	Flip the spins (\(\sigma\)) for block \(\alpha\).
`imp_decomposition`	The impurity decomposition.
`make_zero_imp_self_energies`	Zero initialize impurity self-energies.
`n_gamma`	Number of blocks in \(\gamma\) for the \(\Sigma_{\text{imp}}\) [imp_idx].
`replace`	Replaces one impurity in the embedding table \(\psi\).
`split`	Split impurity imp_idx.