triqs.gf.descriptors.Flat

class triqs.gf.descriptors.Flat(half_bandwidth)

The Hilbert transform of a flat density of states, with cut-off

\[g(z) = \int \frac{A(\omega)}{z-\omega} d\omega\]

where \(A(\omega) = \theta( D^2 - \omega^2)/(2D)\).

(Only works in combination with frequency Green’s functions.)

Methods

__init__(half_bandwidth)

param half_bandwidth: \(D\), the half bandwidth