triqs.dos.dos.DOS.density

DOS.density(mu=0)

Integrated density of free fermions up to chemical potential mu.

Approximates \(\int_{-\infty}^{\mu} d\epsilon\, \rho(\epsilon)\) by the trapezoidal rule on the stored eps / rho arrays, with a linear interpolation across the partial bin straddling mu.

Parameters:

mufloat, optional

Chemical potential. Default 0.

Returns:

float

Filling \(\int_{-\infty}^{\mu} \rho(\epsilon)\, d\epsilon\).