AutoMPO for iDMRG #161
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AutoMPO for iDMRG #161
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…Note that SVD, that is normally performed when constructing the finalMPO, is skipped for an infinite system.
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Thanks a lot Anna! We (me and Matt Fishman) will be looking into this and working on incorporating it into ITensor - |
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Any chance of this been merged? |
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Adjusting AutoMPO implementation to work for infinite systems.
When specifying the Hamiltonian, terms that connect a site in one unit cell to a site in the next unit cell should be specified with site indices (i, N+j), where i and j are the site indices within a unit cell and N is the number of sites in a unit cell.
Note that AutoMPO does not perform any compression in this case - when constructing the finalMPO, the SVD is skipped and the matrix elements of the MPO are taken directly from tempMPO.