WIP: Code update
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This MR has a dual goal:
- Updating to current holoviews to avoid a bunch of deprecation errors
- Updating to Kwant 1.4:
- Eliminating
args=[SimpleNamespace(...)]in favor ofparams={...}. - Using the
Builder.fill/Builder.substitutedpattern when defining systems.
For now we do not intend to use discretizer yet.
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One of the main repeated bits of functionality is plotting spectra that depend on 2 or 3 parameters, often momenta. For that we intend to first evaluate the
hamiltonian_array(defined infunctions), and then implement a spectrum plotter that internally callshamiltonian_array(this second step isn't yet done).-
Pinging @andre_melo and @basnijholt for comments.
274 270 275 271 276 272 ```python 273 # transformation to antisymmetric basis 274 U = np.array([[1.0, 1.0], [1.j, -1.j]]) / np.sqrt(2) 275 276 bulk = kwant.wraparound.wraparound(kitaev_model).finalized() 277 278 pbc = kwant.Builder() 279 pbc[lat(0)] = pbc[lat(L-1)] = onsite 280 pbc[lat(0), lat(L-1)] = hop 281 pbc = pbc.substituted(t='lambda') 282 283 syst.update(pbc) 284 285 finite_chain_pbc = syst.finalized()
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