triqs.gfs.descriptors.OneFermionInTime

class triqs.gfs.descriptors.OneFermionInTime(l=0)

Bases: Base

Single-fermion propagator on an imaginary-time mesh.

Fills the target with the imaginary-time Green’s function of a single fermionic level at energy \(L\):

\[G(\tau) = -\frac{e^{-L\tau}}{1 + e^{-L\beta}}.\]

Parameters:

lfloat, optional

Level energy \(L\). Default 0.

Methods

__call__(G)

Fill G.data with the single-fermion imaginary-time propagator.