.. _sphx_glr_api_gallery_statphys_wang_landau:

Wang-Landau sampling
--------------------

Flat-histogram Monte Carlo: estimating the density of states directly,
then reading off the thermodynamics at every temperature.


.. raw:: html

  <div id='sg-tag-list' class='sphx-glr-tag-list'></div>


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    <div class="sphx-glr-thumbnails">

.. thumbnail-parent-div-open

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    <div class="sphx-glr-thumbcontainer" tooltip="Wang and Landau (2001) replaced sampling at a fixed temperature by a random walk in energy. A spin flip from E_1 to E_2 is accepted with probability \min(1, g(E_1)/g(E_2)), and every visit raises the current estimate \ln g(E) \to \ln g(E) + \ln f. The walk is pushed toward rarely visited levels until the histogram is flat; then \ln f is halved and the walk continues. When \ln f is small, g(E) is the density of states, and">

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  .. image:: /api/gallery/statphys/wang_landau/images/thumb/sphx_glr_plot_wang_landau_density_of_states_thumb.png
    :alt:

  :doc:`/api/gallery/statphys/wang_landau/plot_wang_landau_density_of_states`

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      <div class="sphx-glr-thumbnail-title">Wang-Landau sampling of the Ising density of states</div>
    </div>


.. thumbnail-parent-div-close

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    </div>


.. toctree::
   :hidden:

   /api/gallery/statphys/wang_landau/plot_wang_landau_density_of_states