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https://github.com/triqs/dft_tools
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50 lines
2.0 KiB
ReStructuredText
50 lines
2.0 KiB
ReStructuredText
.. index::
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single: Green's functions; block Green's function
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module: gf_retime
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.. _GfReTime:
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Retarded Green's function in real time (GfReTime)
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=====================================================================================
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This object stores a retarded matrix valued Green function in real time :
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.. math::
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G_{\alpha \beta} (t) \equiv - \theta(t) <\{c_{\alpha}(t) c^{\dagger}_{\beta} (0)\}>
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Reference
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---------------
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.. autoclass:: pytriqs.gf.local.GfReTime
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:members: set_from_inverse_fourier, fourier, transpose, conjugate
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HDF5 data scheme
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^^^^^^^^^^^^^^^^^^^^^^
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The GfReTime (TRIQS_HDF5_data_scheme = "GfReTime") is decomposed in the following objects :
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========================= =========================== ===========================================================================
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Name Type Meaning
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========================= =========================== ===========================================================================
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Mesh MeshGf The mesh
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Tail TailGf The tail
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Data 3d numpy of complex Data[i1,i2,n] is the element of the Green function where :
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* i1, i2 are the indices
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* n is the index of the time slice
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IndicesL,IndicesR string The Python repr of the indices, e.g. (1,2), or (1,)
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repr(this_string) reproduces the indices
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Name string Name of the Green function block
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Note string Note
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========================= =========================== ===========================================================================
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Example
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---------------
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.. plot:: reference/python/green/block/green_retime.py
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:include-source:
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:scale: 70
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