..
   Generated automatically by cpp2rst

.. highlight:: c
.. role:: red
.. role:: green
.. role:: param


.. _triqs_ctseg__measure_nn:

triqs_ctseg::measure_nn
=======================

*#include <triqs_ctseg.hpp>*

.. rst-class:: cppsynopsis

      class  :red:`measure_nn`

 measurement of equal-time density-density correlation function :math:`\langle n_1
 n_2 \rangle`
Measures

.. math::
		\chi_{a,b}^{\sigma\sigma'}\equiv\langle
n_{a\sigma}n_{b\sigma'}\rangle

..
 by using the length and overlaps of segments.


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                                  |                                                        |
+----------+-----------------------------------------+--------------------------------------------------------+


Member functions
----------------

+-------------------------------------------------------------------+--+
| :ref:`(constructor) <triqs_ctseg__measure_nn__constructor>`       |  |
+-------------------------------------------------------------------+--+
| :ref:`accumulate <triqs_ctseg__measure_nn__accumulate>`           |  |
+-------------------------------------------------------------------+--+
| :ref:`collect_results <triqs_ctseg__measure_nn__collect_results>` |  |
+-------------------------------------------------------------------+--+

.. toctree::
    :hidden:

    measure_nn/constructor
    measure_nn/accumulate
    measure_nn/collect_results