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small changes in doc
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@ -142,12 +142,12 @@ where `-qdmft` flag turns on LDA+DMFT calculations with :program:`Wien2k`. We us
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After calculations are done we may check the value of correlational ('Hubbard') energy correction to the total energy::
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After calculations are done we may check the value of correlational ('Hubbard') energy correction to the total energy::
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>grep HUBBARD Ce-gamma.scf|tail -n 1
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>grep HUBBARD Ce-gamma.scf|tail -n 1
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HUBBARD ENERGY(included in SUM OF EIGENVALUES): -0.012875
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HUBBARD ENERGY(included in SUM OF EIGENVALUES): -0.220501
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and the band("kinetic") energy with DMFT correction::
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and the band("kinetic") energy with DMFT correction::
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>grep DMFT Ce-gamma.scf |tail -n 1
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>grep DMFT Ce-gamma.scf |tail -n 1
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KINETIC ENERGY with DMFT correction: -3.714346
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KINETIC ENERGY with DMFT correction: -5.337286
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as well as the convergence in total energy::
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as well as the convergence in total energy::
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doc/Ce_DOS.png
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@ -62,8 +62,8 @@ They denerally should be reset for a given problem. Their meaning is as follows:
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* `use_matrix`: If `True`, the interaction matrix is calculated from Slater integrals, which are calculated from `U_interact` and
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* `use_matrix`: If `True`, the interaction matrix is calculated from Slater integrals, which are calculated from `U_interact` and
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`J_hund`. Otherwise, a Kanamori representation is used. Attention: We define the intraorbital interaction as
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`J_hund`. Otherwise, a Kanamori representation is used. Attention: We define the intraorbital interaction as
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`U_interact`, the interorbital interaction for opposite spins as `U_interact-2*J_hund`, and interorbital for equal spins as
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`U_interact+2J_hund`, the interorbital interaction for opposite spins as `U_interact`, and interorbital for equal spins as
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`U_interact-3*J_hund`.
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`U_interact-J_hund`!
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* `T`: A matrix that transforms the interaction matrix from spherical harmonics, to a symmetry adapted basis. Only effective, if
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* `T`: A matrix that transforms the interaction matrix from spherical harmonics, to a symmetry adapted basis. Only effective, if
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`use_matrix=True`.
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`use_matrix=True`.
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* `l`: Orbital quantum number. Again, only effective for Slater parametrisation.
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* `l`: Orbital quantum number. Again, only effective for Slater parametrisation.
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@ -80,8 +80,6 @@ They denerally should be reset for a given problem. Their meaning is as follows:
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Most of above parameters can be taken directly from the :class:`SumkLDA` class, without defining them by hand. We will see a specific example
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Most of above parameters can be taken directly from the :class:`SumkLDA` class, without defining them by hand. We will see a specific example
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at the end of this tutorial.
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at the end of this tutorial.
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After initialisation, several other CTQMC parameters can be set (see CTQMC doc).
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.. index:: LDA+DMFT loop, one-shot calculation
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.. index:: LDA+DMFT loop, one-shot calculation
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@ -99,7 +97,9 @@ set up the loop over DMFT iterations and the self-consistency condition::
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S.G <<= SK.extract_G_loc()[0] # extract the local Green function
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S.G <<= SK.extract_G_loc()[0] # extract the local Green function
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S.G0 <<= inverse(S.Sigma + inverse(S.G)) # finally get G0, the input for the Solver
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S.G0 <<= inverse(S.Sigma + inverse(S.G)) # finally get G0, the input for the Solver
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S.Solve(U_interact = U, J_hund = J) # now solve the impurity problem
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S.solve(U_interact,J_hund,use_spinflip=False,use_matrix=True, # now solve the impurity problem
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l=2,T=None, dim_reps=None, irep=None, deg_orbs=[],n_cycles =10000,
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length_cycle=200,n_warmup_cycles=1000)
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dm = S.G.density() # density matrix of the impurity problem
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dm = S.G.density() # density matrix of the impurity problem
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SK.set_dc( dm, U_interact = U, J_hund = J, use_dc_formula = 0) # Set the double counting term
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SK.set_dc( dm, U_interact = U, J_hund = J, use_dc_formula = 0) # Set the double counting term
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@ -72,7 +72,7 @@ Most conveniently, it is stored as a real frequency :class:`BlockGf` object in t
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ar['SigmaReFreq'] = Sigma_real
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ar['SigmaReFreq'] = Sigma_real
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del ar
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del ar
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You may also store it in text files. If all blocks of your self energy are of dimension 1x1 you store them in `filename_(block)0.dat` files. Here `(block)` is a block name (`up`, `down`, or combined `ud`). In the case when you have matrix blocks, you store them in `(i)_(j).dat` files in the `filename_(block)` directory
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You may also store it in text files. If all blocks of your self energy are of dimension 1x1 you store them in `fname_(block)0.dat` files. Here `(block)` is a block name (`up`, `down`, or combined `ud`). In the case when you have matrix blocks, you store them in `(i)_(j).dat` files (where `(i)` and `(j)` are the orbital indices) in the `fname_(block)` directory
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This self energy is loaded and put into the :class:`SumkLDA` class by the function::
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This self energy is loaded and put into the :class:`SumkLDA` class by the function::
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@ -81,20 +81,21 @@ This self energy is loaded and put into the :class:`SumkLDA` class by the functi
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where:
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where:
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* `filename` is the file name of the hdf5 archive file or the `fname` pattern in text files names as described above.
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* `filename` is the name of the hdf5 archive file or the `fname` pattern in text files names as described above.
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* `hdf=True` the real-axis self energy will be read from the hdf5 file, `hdf=False`: from the text files
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* `hdf=True`: the real-axis self energy will be read from the hdf5 file, `hdf=False`: from the text files
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* `hdf_dataset` the name of dataset where the self energy is stored in the hdf5 file
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* `hdf_dataset` the name of dataset where the self energy is stored in the hdf5 file
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* `n_om` number of points in the real-axis mesh (used only if `hdf=False`)
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* `n_om` number of points in the real-axis mesh (used only if `hdf=False`)
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The chemical potential as well as the double
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The chemical potential as well as the double
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counting correction was already read in the initialisation process.
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counting correction were already read in the initialisation process.
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With this self energy, we can do now::
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With this self energy, we can do now::
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SK.dos_partial()
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SK.dos_partial(broadening=broadening)
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This produces the momentum-integrated spectral functions (density of states, DOS), also orbitally resolved.
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This produces the momentum-integrated spectral functions (density of states, DOS), also orbitally resolved.
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The variable `broadening` is an additional Lorentzian broadening that is added to the resulting spectra.
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The output is printed into the files
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The output is printed into the files
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* `DOScorr(sp).dat`: The total DOS. `(sp)` stands for `up`, `down`, or combined `ud`. The latter case
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* `DOScorr(sp).dat`: The total DOS. `(sp)` stands for `up`, `down`, or combined `ud`. The latter case
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@ -111,7 +112,7 @@ converter routines, see :ref:`interfacetowien`. The spectral function is calcula
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SK.spaghettis(broadening)
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SK.spaghettis(broadening)
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The variable `broadening`1 is an additional Lorentzian broadening that is added to the resulting spectra. The output is
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The output is
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written as the 3-column files ``Akw(sp).dat``, where `(sp)` has the same meaning as above. The output format is
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written as the 3-column files ``Akw(sp).dat``, where `(sp)` has the same meaning as above. The output format is
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`k`, :math:`\omega`, `value`. Optional parameters are
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`k`, :math:`\omega`, `value`. Optional parameters are
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