triqs_ctseg::measure_nn¶

#include <triqs_ctseg.hpp>

class measure_nn

measurement of equal-time density-density correlation function \(\langle n_1 n_2 \rangle\)

Measures

\[\chi_{a,b}^{\sigma\sigma'}\equiv\langle\]

n_{asigma}n_{bsigma’}rangle

Public members¶

params	const triqs_ctseg::qmc_parameters *
config	const triqs_ctseg::configuration *const
overlaps	triqs::arrays::block_matrix<double> *	matrix of segment overlaps; densities on the diagonal
nn	matrix<double>
Z	double