triqs.gf.descriptors.SemiCircular

class triqs.gf.descriptors.SemiCircular(half_bandwidth, chem_potential=0.0)

Hilbert transform of a semicircular density of states, i.e.

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

where \(A(\omega) = \theta( D - |\omega|) 2 \sqrt{ D^2 - \omega^2}/(\pi D^2)\).

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

Methods

__init__(half_bandwidth[, chem_potential])

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