Пример #1
0
    def __init__(self, **d):
        """
        The constructor have two variants : you can either provide the mesh in
        Matsubara frequencies yourself, or give the parameters to build it.
        All parameters must be given with keyword arguments.

        GfReFreq(indices, window, n_points, data, tail, name)

              * ``indices``:  a list of indices names of the block
              * ``window``:  a tuple (omega_min, omega_max)
              * ``n_points``  : Number of frequency points in the mesh
              * ``data``:   A numpy array of dimensions (len(indices),len(indices),n_points) representing the value of the Green function on the mesh.
              * ``tail``:  the tail
              * ``name``:  a name of the GF

        GfReFreq (indices, mesh, data, tail, name)

              * ``indices``:  a list of indices names of the block
              * ``mesh``:  a MeshGf object, such that mesh.TypeGF== GF_Type.Imaginary_Time
              * ``data``:   A numpy array of dimensions (len(indices),len(indices),n_points) representing the value of the Green function on the mesh.
              * ``tail``:  the tail
              * ``name``:  a name of the GF

        .. warning::

          The Green function take a **view** of the array data, and a **reference** to the tail.

        """
        mesh = d.pop('mesh',None)
        if mesh is None :
            window = d.pop('window')
            omega_min = window[0]
            omega_max = window[1]
            n_max = d.pop('n_points',10000)
            kind = d.pop('kind','F')
            mesh = MeshReFreq(omega_min, omega_max, n_max, kind)

        self.dtype = numpy.complex_
        indices_pack = get_indices_in_dict(d)
        indicesL, indicesR = indices_pack
        N1, N2 = len(indicesL),len(indicesR)
        data = d.pop('data') if 'data' in d else numpy.zeros((len(mesh),N1,N2), self.dtype )
        tail= d.pop('tail') if 'tail' in d else TailGf(shape = (N1,N2))
        symmetry = d.pop('symmetry',None)
        name = d.pop('name','g')
        assert len(d) ==0, "Unknown parameters in GFBloc constructions %s"%d.keys()

        GfGeneric.__init__(self, mesh, data, tail, symmetry, indices_pack, name, GfReFreq)
        GfReFreq_cython.__init__(self, mesh, data, tail)
Пример #2
0
    def __init__(self,**d):
        """
     The constructor has two variants : you can either provide the mesh in
     real frequencies yourself, or give the parameters to build it.
     All parameters must be given with keyword arguments.

     GfReFreq(indices, beta, statistic, mesh_array, data, tail, name, note)

           * ``indices``:  a list of indices names of the block
           * ``beta``:  Inverse Temperature 
           * ``statistic``:  GF_statistic.Fermion [default] or GF_statistic.Boson
           * ``mesh_array``: Grid of frequencies, as a numpy array.
           * ``data``:   A numpy array of dimensions (len(indices),len(indices),len(mesh_array)) representing the value of the Green function on the mesh. 
           * ``tail``:  the tail 
           * ``name``:  a name of the GF
           * ``note``:  any string you like...

     If you already have the mesh, you can use a simpler version :

     GfReFreq(indices, mesh, data, tail, name, note)
        
           * ``indices``:  a list of indices names of the block
           * ``mesh``:  a MeshGf object, such that mesh.TypeGF== GF_Type.Real_Frequency 
           * ``data``:   A numpy array of dimensions (len(indices),len(indices),len(mesh_array)) representing the value of the Green function on the mesh.            * ``tail``:  the tail 
           * ``name``:  a name of the GF
           * ``note``:  any string you like...

.. warning::
    The Green function take a **view** of the array data, and a **reference** to the tail.

        """
        # construct the mesh if needed
        if 'mesh' not in d : 
            if 'beta' not in d : raise ValueError, "beta not provided"
            beta = float(d.pop('beta'))
            n_max = d.pop('n_max',1025)
            stat = d.pop('statistic','F') # GF_statistic.Fermion
            sh = 1 if stat== 'F' else 0 # GF_statistic.Fermion else 0
            d['mesh'] = MeshRealFrequency(beta,n_max)
            #if 'mesh_array' not in d : raise ValueError, "mesh_array not provided"
            #d['mesh'] = MeshGf( GF_Type.Real_Frequency,stat,beta,d['mesh_array'])

        GfReFreq_cython.__init__(self,*self._prepare_init(d))