What’s New

0.8.1 (2021-04-25)

New Features

The 3D cubic lattices were added:

• body-centered cubic gftool.lattice.bcc (406acef8)
• face-centered cubic gftool.lattice.fcc (ddd559cb)

0.8.0 (2021-04-17)

New Features

The gftool.lattice module was extended, especially regarding two-dimensional lattice. There where also some enhancements, given DOS moments are now up to order 20, and they should be accurate to machine precision.

The following lattices where added with full interface:

• Simple cubic: gftool.lattice.sc (4e3021) by Andreas Östlin
• Honeycomb: gftool.lattice.honeycomb (7aa3133)
• Triangular: gftool.lattice.triangular (c56f33e)

Local Green’s function and DOS is now also available for the following lattices:

• Lieb: gftool.lattice.lieb (c76e948)
• Kagome: gftool.lattice.kagome (28a41c0)
• Bethe lattice with general coordination: gftool.lattice.bethez (2648cf4)
• Rectangular: gftool.lattice.rectangular

Other New Features

• add retarded time Green’s function give by its poles gftool.pole_gf_ret_t
• added gftool.siam module with some basics for the non-interacting siam

Depreciations

• gftool.density is deprecated and will likely be discontinued. Consider the more flexible gftool.density_iw instead.

Documentation

• Button to toggle the prompt (>>>) was added (46b6f39)

Internal improvements

• Ensure more accurate numpy.sum using partial pairwise summation for generalized ufuncs (2d3baef)

0.7.0 (2020-10-18)

Breaking Changes

• The gftool.pade module had a minor rework. The behavior of filters changed. Future breaking changes are to be expected, the module is not well structured.

New Features

• add gftool.lattice.onedim for Green’s function of one-dimensional lattice
• add fitting of high-frequency moment to gftool.fourier.iw2tau (e2c92e2)

Other New Features

• add gftool.pade_frequencies (9f492fc)
• add gftool.density_iw function as common interface to calculate occupation number from Matsubara or Padé frequencies
• allow calculation of gftool.lattice.bethe for Bethe lattice at complex points (note, that this is probably not a physically meaningful quantity) (ccbac7b)
• add stress tensor transformation gftool.lattice.square.stress_trafo for 2D (528fb21)

Bug fixes

• Fix constant in gftool.fourier.tau2iw_ft_lin (e2163e3). This error most likely didn’t significantly affect any results for a reasonable number of tau-points.
• gftool.density should work now with gu-style matrices (4deffdf)

Documentation

• Functions exposed at the top level (gftool) should now properly appear in the documentation.

0.6.1