triqs.gf.tools.delta
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triqs.gf.tools.
delta
(g)[source] Compute Delta_iw from G0_iw. CAUTION: This function assumes the following properties of g
- The diagonal components of g should decay as 1/iOmega
- g should fullfill the property g[iw][i,j] = conj(g[-iw][j,i])
Parameters: g (BlockGf (of GfImFreq) or GfImFreq) – Non-interacting Green’s function. Returns: delta_iw – Hybridization function. Return type: BlockGf (of GfImFreq) or GfImFreq