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diff --git a/master/.buildinfo b/master/.buildinfo
@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: b2bb6b0d30f2e0f173a6fbba9257a45e
+config: c2acb02f0899c5d6ed6eb4556cc31332
 tags: 645f666f9bcd5a90fca523b33c5a78b7
diff --git a/master/.doctrees/about.doctree b/master/.doctrees/about.doctree
diff --git a/master/.doctrees/analytic_continuation.doctree b/master/.doctrees/analytic_continuation.doctree
diff --git a/master/.doctrees/analytic_continuation/external_code.doctree b/master/.doctrees/analytic_continuation/external_code.doctree
diff --git a/master/.doctrees/analytic_continuation/pade.doctree b/master/.doctrees/analytic_continuation/pade.doctree
diff --git a/master/.doctrees/analytic_continuation/spm.doctree b/master/.doctrees/analytic_continuation/spm.doctree
diff --git a/master/.doctrees/basicnotions/structure.doctree b/master/.doctrees/basicnotions/structure.doctree
diff --git a/master/.doctrees/environment.pickle b/master/.doctrees/environment.pickle
diff --git a/master/.doctrees/impuritysolvers.doctree b/master/.doctrees/impuritysolvers.doctree
diff --git a/master/.doctrees/impuritysolvers/alpscore_cthyb/cthyb.doctree b/master/.doctrees/impuritysolvers/alpscore_cthyb/cthyb.doctree
diff --git a/master/.doctrees/impuritysolvers/alpscore_ctseg/ctseg.doctree b/master/.doctrees/impuritysolvers/alpscore_ctseg/ctseg.doctree
diff --git a/master/.doctrees/impuritysolvers/how_to_integrate.doctree b/master/.doctrees/impuritysolvers/how_to_integrate.doctree
diff --git a/master/.doctrees/impuritysolvers/null.doctree b/master/.doctrees/impuritysolvers/null.doctree
diff --git a/master/.doctrees/impuritysolvers/pomerol/pomerol.doctree b/master/.doctrees/impuritysolvers/pomerol/pomerol.doctree
diff --git a/master/.doctrees/impuritysolvers/triqs_cthyb/cthyb.doctree b/master/.doctrees/impuritysolvers/triqs_cthyb/cthyb.doctree
diff --git a/master/.doctrees/impuritysolvers/triqs_hubbard_one/hubbard_one.doctree b/master/.doctrees/impuritysolvers/triqs_hubbard_one/hubbard_one.doctree
diff --git a/master/.doctrees/index.doctree b/master/.doctrees/index.doctree
diff --git a/master/.doctrees/install.doctree b/master/.doctrees/install.doctree
diff --git a/master/.doctrees/presentation.doctree b/master/.doctrees/presentation.doctree
diff --git a/master/.doctrees/reference.doctree b/master/.doctrees/reference.doctree
diff --git a/master/.doctrees/reference/gf_format.doctree b/master/.doctrees/reference/gf_format.doctree
diff --git a/master/.doctrees/reference/input.doctree b/master/.doctrees/reference/input.doctree
diff --git a/master/.doctrees/reference/interaction.doctree b/master/.doctrees/reference/interaction.doctree
diff --git a/master/.doctrees/reference/lattice.doctree b/master/.doctrees/reference/lattice.doctree
diff --git a/master/.doctrees/reference/local_potential.doctree b/master/.doctrees/reference/local_potential.doctree
diff --git a/master/.doctrees/reference/output.doctree b/master/.doctrees/reference/output.doctree
diff --git a/master/.doctrees/reference/programs.doctree b/master/.doctrees/reference/programs.doctree
diff --git a/master/.doctrees/reference/slater_basis.doctree b/master/.doctrees/reference/slater_basis.doctree
diff --git a/master/.doctrees/support.doctree b/master/.doctrees/support.doctree
diff --git a/master/.doctrees/support/faqs.doctree b/master/.doctrees/support/faqs.doctree
diff --git a/master/.doctrees/support/issues.doctree b/master/.doctrees/support/issues.doctree
diff --git a/master/.doctrees/todolist.doctree b/master/.doctrees/todolist.doctree
diff --git a/master/.doctrees/tools.doctree b/master/.doctrees/tools.doctree
diff --git a/master/.doctrees/tools/akw_converter/akw.doctree b/master/.doctrees/tools/akw_converter/akw.doctree
diff --git a/master/.doctrees/tutorial.doctree b/master/.doctrees/tutorial.doctree
diff --git a/master/.doctrees/tutorial/afm.bak/afm.doctree b/master/.doctrees/tutorial/afm.bak/afm.doctree
diff --git a/master/.doctrees/tutorial/afm/afm.doctree b/master/.doctrees/tutorial/afm/afm.doctree
diff --git a/master/.doctrees/tutorial/bethe-t2g/bethe.doctree b/master/.doctrees/tutorial/bethe-t2g/bethe.doctree
diff --git a/master/.doctrees/tutorial/spin_orbit/spin_orbit.doctree b/master/.doctrees/tutorial/spin_orbit/spin_orbit.doctree
diff --git a/master/.doctrees/tutorial/square.bak/square.doctree b/master/.doctrees/tutorial/square.bak/square.doctree
diff --git a/master/.doctrees/tutorial/square/square.doctree b/master/.doctrees/tutorial/square/square.doctree
diff --git a/master/.doctrees/tutorial/srvo3/openmx/openmx.doctree b/master/.doctrees/tutorial/srvo3/openmx/openmx.doctree
diff --git a/master/.doctrees/tutorial/srvo3/qe/qe.doctree b/master/.doctrees/tutorial/srvo3/qe/qe.doctree
diff --git a/master/.doctrees/tutorial/srvo3/srvo3.doctree b/master/.doctrees/tutorial/srvo3/srvo3.doctree
diff --git a/master/.doctrees/tutorial/srvo3_openmx/openmx.doctree b/master/.doctrees/tutorial/srvo3_openmx/openmx.doctree
diff --git a/master/.doctrees/tutorial/srvo3_respack/respack.doctree b/master/.doctrees/tutorial/srvo3_respack/respack.doctree
diff --git a/master/.doctrees/warning_compatibility.doctree b/master/.doctrees/warning_compatibility.doctree
diff --git a/master/_downloads/00c8a87a9b06604eae86356032d591d3/srvo3_openmx.ini b/master/_downloads/00c8a87a9b06604eae86356032d591d3/srvo3_openmx.ini
@@ -29,13 +29,18 @@ move_double{bool} = True
 [control]
 max_step = 8
 
-[tool]
+[post.spectrum]
 broadening = 0.1
 nk_line = 50
-nnode = 5
 knode=[(G,0.0,0.0,0.0),(X,0.5,0.0,0.0),(M,0.5,0.5,0.0),(G,0.0,0.0,0.0),(R,0.5,0.5,0.5)]
+
+[post.anacont]
 omega_max =2.0
 omega_min =-2.0
 Nomega = 400
+
+[post.anacont.pade]
+iomega_max = 5.0
+
+[post.check]
 omega_check = 30.0
-omega_pade = 5.0
diff --git a/master/_downloads/10fc7c42a65156219ff44a58832511f2/srvo3_respack.ini b/master/_downloads/10fc7c42a65156219ff44a58832511f2/srvo3_respack.ini
@@ -29,13 +29,18 @@ move_double{bool} = True
 [control]
 max_step = 8
 
-[tool]
+[post.spectrum]
 broadening = 0.1
 nk_line = 50
-nnode = 6
 knode=[(G,0.0,0.0,0.0),(X,0.5,0.0,0.0),(M,0.5,0.5,0.0),(G,0.0,0.0,0.0),(R,0.5,0.5,0.5),(X,0.5,0.0,0.0),]
+
+[post.anacont]
 omega_max =2.0
 omega_min =-2.0
 Nomega = 400
+
+[post.anacont.pade]
+iomega_max = 6.0
+
+[post.check]
 omega_check = 30.0
-omega_pade = 6.0
diff --git a/master/_downloads/20038bb177c668c41dc9aaf6a269b495/dmft_square_pomerol.ini b/master/_downloads/20038bb177c668c41dc9aaf6a269b495/dmft_square_pomerol.ini
@@ -25,10 +25,12 @@ sigma_mix = 0.5
 time_reversal = True
 converge_tol = 1e-5
 
-[tool]
+[post.spectrum]
 broadening = 0.4
 knode = [(G,0.0,0.0,0.0),(X,0.5,0.0,0.0),(M,0.5,0.5,0.0),(G,0.0,0.0,0.0)]
 nk_line = 100
+
+[post.anacont]
 omega_max =6.0
 omega_min =-5.0
 Nomega = 400
diff --git a/master/_downloads/31788b3693fc3cb21a91ecc717e68725/dmft_square_akw.ini b/master/_downloads/31788b3693fc3cb21a91ecc717e68725/dmft_square_akw.ini
@@ -29,7 +29,7 @@ max_step = 20
 sigma_mix = 0.5
 time_reversal = True
 
-[tool]
+[post.spectrum]
 broadening = 0.0
 knode = [(G,0,0,0),(X,0.5,0,0),(M,0.5,0.5,0),(G,0,0,0)]
 nk_line = 100
@@ -41,6 +41,8 @@ nk_line = 100
 nk0_mesh = 100
 nk1_mesh = 100
 nk2_mesh = 4
+
+[post.anacont]
 omega_max = 1.0
 omega_min = -1.0
 Nomega = 3
diff --git a/master/_downloads/4597ad694e31bb00dcb3d29f11e8e0c8/dmft_bethe.ini b/master/_downloads/4597ad694e31bb00dcb3d29f11e8e0c8/dmft_bethe.ini
@@ -24,7 +24,7 @@ max_step = 40
 sigma_mix = 1.0
 restart = False
 
-[tool]
+[post.anacont]
 omega_max = 15.0
 omega_min =-15.0
 Nomega = 100
diff --git a/master/_downloads/90e0825153f3d161a26ce497aa915e47/srvo3_openmx.ini b/master/_downloads/90e0825153f3d161a26ce497aa915e47/srvo3_openmx.ini
@@ -29,13 +29,18 @@ move_double{bool} = True
 [control]
 max_step = 8
 
-[tool]
+[post.spectrum]
 broadening = 0.1
 nk_line = 50
-nnode = 5
 knode=[(G,0.0,0.0,0.0),(X,0.5,0.0,0.0),(M,0.5,0.5,0.0),(G,0.0,0.0,0.0),(R,0.5,0.5,0.5)]
+
+[post.anacont]
 omega_max =2.0
 omega_min =-2.0
 Nomega = 400
+
+[post.anacont.pade]
+iomega_max = 5.0
+
+[post.check]
 omega_check = 30.0
-omega_pade = 5.0
diff --git a/master/_downloads/91e34cddf4f76571df423bc78a2284ca/spm.ini b/master/_downloads/91e34cddf4f76571df423bc78a2284ca/spm.ini
@@ -0,0 +1,47 @@
+[model]
+seedname = square
+lattice = square
+norb = 1
+nelec = 1.0
+t = -1.0
+kanamori = [(4.0, 0.0, 0.0)]
+nk0 = 8
+nk1 = 8
+nk2 = 1
+
+[system]
+T = 0.1
+n_iw = 1000
+fix_mu = True
+mu = 2.0
+
+[impurity_solver]
+name = pomerol
+exec_path{str} = pomerol2dcore
+n_bath{int} = 3
+fit_gtol{float} = 1e-6
+
+[control]
+max_step = 100
+sigma_mix = 0.5
+time_reversal = true
+converge_tol = 1e-5
+
+[post.anacont]
+solver = spm
+show_result = false
+save_result = true
+omega_max = 6.0
+omega_min = -6.0
+Nomega = 401
+
+[post.anacont.spm]
+n_matsubara = 1000
+n_tau = 101
+n_tail = 5
+n_sv = 30
+lambda = 1e-5
+solver = ECOS
+
+[post.anacont.spm.solver]
+max_iters{int} = 100
diff --git a/master/_downloads/9ed299cdde367d92cf6cce9fcc00018a/dmft_square_pomerol.ini b/master/_downloads/9ed299cdde367d92cf6cce9fcc00018a/dmft_square_pomerol.ini
@@ -26,10 +26,19 @@ max_step = 100
 sigma_mix = 0.5
 converge_tol = 1e-5
 
-[tool]
-knode = [(G,0,0,0),(X,0.5,0,0),(M,0.5,0.5,0),(G,0,0,0)]
-nk_line = 100
+[post.anacont]
+solver = pade
 omega_max = 6.0
 omega_min = -6.0
 Nomega = 401
+
+[post.anacont.pade]
+n_min = 20
+n_max = 1000
+iomega_max = 1e+20
+eta = 0.1
+
+[post.spectrum]
+knode = [(G,0,0,0),(X,0.5,0,0),(M,0.5,0.5,0),(G,0,0,0)]
+nk_line = 100
 broadening = 0.4
diff --git a/master/_downloads/acfea0960af5e7261073915619a15d3c/dmft_square_ctseg.ini b/master/_downloads/acfea0960af5e7261073915619a15d3c/dmft_square_ctseg.ini
@@ -31,10 +31,19 @@ max_step = 20
 sigma_mix = 0.5
 time_reversal = True
 
-[tool]
-broadening = 0.0
-knode = [(G,0.0,0.0,0.0),(X,0.5,0.0,0.0),(M,0.5,0.5,0.0),(G,0.0,0.0,0.0)]
-nk_line = 100
+[post.anacont]
+solver = pade
 omega_max = 6.0
 omega_min = -6.0
 Nomega = 401
+
+[post.anacont.pade]
+n_min = 20
+n_max = 1000
+iomega_max = 1e+20
+eta = 0.1
+
+[post.spectrum]
+knode = [(G,0.0,0.0,0.0),(X,0.5,0.0,0.0),(M,0.5,0.5,0.0),(G,0.0,0.0,0.0)]
+nk_line = 100
+broadening = 0.0
diff --git a/master/_downloads/b65e337248cde4f14fd64ddc46ce10df/pade.ini b/master/_downloads/b65e337248cde4f14fd64ddc46ce10df/pade.ini
@@ -0,0 +1,39 @@
+[model]
+seedname = square
+lattice = square
+norb = 1
+nelec = 1.0
+t = -1.0
+kanamori = [(4.0, 0.0, 0.0)]
+nk0 = 8
+nk1 = 8
+nk2 = 1
+
+[system]
+T = 0.1
+n_iw = 1000
+fix_mu = True
+mu = 2.0
+
+[impurity_solver]
+name = pomerol
+exec_path{str} = pomerol2dcore
+n_bath{int} = 3
+fit_gtol{float} = 1e-6
+
+[control]
+max_step = 100
+sigma_mix = 0.5
+time_reversal = true
+converge_tol = 1e-5
+
+[post.anacont]
+solver = pade
+show_result = false
+save_result = true
+omega_max = 6.0
+omega_min = -6.0
+Nomega = 401
+
+[post.anacont.pade]
+eta = 0.1
diff --git a/master/_downloads/c64f73d0e3b58daa5cfb6f9b75b04860/srvo3.ini b/master/_downloads/c64f73d0e3b58daa5cfb6f9b75b04860/srvo3.ini
@@ -28,13 +28,18 @@ max_step = 12
 time_reversal = True
 sigma_mix = 0.8
 
-[tool]
+[post.spectrum]
 broadening = 0.1
 nk_line = 50
-nnode = 5
 knode=[(G,0.0,0.0,0.0),(X,0.5,0.0,0.0),(M,0.5,0.5,0.0),(G,0.0,0.0,0.0),(R,0.5,0.5,0.5)]
+
+[post.anacont]
 omega_max =2.0
 omega_min =-2.0
 Nomega = 400
+
+[post.anacont.pade]
+iomega_max = 2.0
+
+[post.check]
 omega_check = 30.0
-omega_pade = 2.0
diff --git a/master/_downloads/d0c992f2d92d0de470cae6f92934f461/square_afm.ini b/master/_downloads/d0c992f2d92d0de470cae6f92934f461/square_afm.ini
@@ -30,11 +30,13 @@ max_step = 30
 sigma_mix = 0.5
 initial_static_self_energy = {0: 'init_se_up.txt', 1: 'init_se_down.txt'}
 
-[tool]
+[post.spectrum]
 broadening = 0.0
 knode = [(G,0.0,0.0,0.0),(X,0.5,0.0,0.0),(M,0.5,0.5,0.0),(G,0.0,0.0,0.0)]
 # knode = [(G,0,0,0),(X,1,0,0),(M,1,1,0),(G,0,0,0)]
 nk_line = 100
+
+[post.anacont]
 omega_max = 6.0
 omega_min = -6.0
 Nomega = 401
diff --git a/master/_images/akw1.png b/master/_images/akw1.png
diff --git a/master/_images/akw2.png b/master/_images/akw2.png
diff --git a/master/_images/dos1.png b/master/_images/dos1.png
diff --git a/master/_images/iter_sigma-ish04.png b/master/_images/iter_sigma-ish04.png
diff --git a/master/_images/pade.png b/master/_images/pade.png
diff --git a/master/_images/spm.png b/master/_images/spm.png
diff --git a/master/_images/structure.png b/master/_images/structure.png
diff --git a/master/_images/structure_post.png b/master/_images/structure_post.png
diff --git a/master/_sources/about.rst.txt b/master/_sources/about.rst.txt
@@ -49,7 +49,8 @@ Authors & Quotation
 
 **Developers**:
 
-- ver. 2.0
+
+- ver. 2.0-
 
   H. Shinaoka, J. Otsuki, K. Yoshimi, M. Kawamura, N. Takemori, Y. Motoyama
 
@@ -60,6 +61,7 @@ Authors & Quotation
   H. Shinaoka, J. Otsuki, K. Yoshimi, M. Kawamura, T. Kato
 
 **Related papers**:
+
 This package depends on TRIQS libraries and applications.
 Please cite relevant papers for these original libraries.
 
@@ -75,6 +77,10 @@ In addition to the above two libraries, you may use impurity solvers listed belo
 
 For some of them, they provide a BibTeX entry for each paper in the above cites.
 
+When you use the SpM method for analytic continuation, please cite the following paper:
+
+* `Junya Otsuki, Masayuki Ohzeki, Hiroshi Shinaoka, and Kazuyoshi Yoshimi, Phys. Rev. E 95, 061302(R) (2017) <https://journals.aps.org/pre/abstract/10.1103/PhysRevE.95.061302>`_
+
 GitHub repository
 -----------------
 

diff --git a/master/_sources/analytic_continuation.rst.txt b/master/_sources/analytic_continuation.rst.txt
@@ -0,0 +1,19 @@
+Analytic continuation
+=====================
+
+The analytic continuation is a method to obtain the real-frequency Green's function from the imaginary-frequency Green's function.
+The program ``dcore_anacont`` performs the analytic continuation with the Pade approximation and the sparse-modeling method.
+
+.. toctree::
+   :maxdepth: 1
+
+   analytic_continuation/pade
+   analytic_continuation/spm
+
+
+Users can also use external codes for the analytic continuation.
+
+.. toctree::
+   :maxdepth: 1
+
+   analytic_continuation/external_code
diff --git a/master/_sources/analytic_continuation/external_code.rst.txt b/master/_sources/analytic_continuation/external_code.rst.txt
@@ -0,0 +1,55 @@
+How to use an external AC code
+===============================
+
+You can use an external code to perform AC of the self-energy from the Matsubara frequency to the real frequency.
+The only thing the code needs to do is to write the self-energy in the real frequency as a NumPy binary file, ``post/sigma_w.npz``
+from the Matsubara frequency self-energy stored in ``seedname_sigma_iw.npz``.
+
+Input file: ``seedname_sigma_iw.npz``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+``seedname_sigma_iw.npz`` is a NumPy binary file, so you can load it with ``numpy.load`` function.
+
+.. code-block:: python3
+
+    import numpy as np
+    npz = np.load("./seedname_sigma_iw.npz")
+
+The returned object, ``npz``, is a dictionary. The keys are as follows:
+
+.. csv-table::
+    :header: Key, Type, Description
+    :widths: 5, 10, 20
+
+    "beta", float, "Inverse temperature"
+    "iwn", array of complex, "Matsubara frequency"
+    "data#", array of complex, "Self-energy of #-th inequivalent shell"
+    "hartree\_fock#", array of complex, "Hartree-Fock term of #-th inequivalent shell"
+
+Here, "#" is 0, 1, 2, ... .
+
+"data#" is a :math:`N_{i\omega} \times N_\text{orb} \times N_\text{orb}` array, where :math:`N_{i\omega}` is the number of Matsubara frequencies, and :math:`N_\text{orb}` is the number of orbitals.
+
+"hartree\_fock#" is a Hartree-Fock term of "#"-th inequivalent shell, :math:`H^\text{f}`.
+
+.. math::
+  
+    H^\text{f}_{ik} = \sum_{jl} U_{ijkl} \left\langle c^\dagger_j c_l \right\rangle 
+
+The data format is a :math:`N_\text{orb} \times N_\text{orb}` array, where :math:`N_\text{orb}` is the number of orbitals.
+
+Output file: ``post/sigma_w.npz``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The output file, ``post/sigma_w.npz``, is also a NumPy binary file storing one dictionary with the following keys:
+
+.. csv-table::
+    :header: Key, Type, Description
+    :widths: 5, 10, 20
+
+    "omega", array of real, "frequency"
+    "data#", array of complex, "Self-energy of #-th inequivalent shell"
+
+Here, "#" is 0, 1, 2, ... .
+
+"data#" is a :math:`N_{\omega} \times N_\text{orb} \times N_\text{orb}` array, where :math:`N_{\omega}` is the number of frequencies, and :math:`N_\text{orb}` is the number of orbitals.