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The Variational Cluster Approximation
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This submodule provides functions that implements the Variational Cluster Approximation (VCA).
The class `VCA` implements the VCA method. Defining an instance of this class performs the
VCA procedure.

.. autoclass:: pyqcm.vca.VCA
    :members:

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Other VCA-related functions
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.. automodule:: pyqcm.vca
    :members:
    :exclude-members: VCA