triqs.gfs.block_gf.BlockGf.density
- BlockGf.density(*args, **kwargs)[source]
Compute per-block single-particle density matrices.
Equivalent to \(\langle c^\dagger_i c_j \rangle\) evaluated per block from the diagonal-frequency / equal-time limit of the block Green’s function.
- Parameters:
- *args, **kwargs
Forwarded to
density()for each block.
- Returns:
- dict of {strnumpy.ndarray}
Mapping
block_name -> density_matrix.