Is there a native implementation of Baker’s MultiTargeted Alogrithm for higher energy eigenvalues?
As defined here:
If there is not, are you considering implementing it?
Hi Emilio,
We aren’t planning to add that algorithm in the near future. We do have a single, orthogonalization-based algorithm available for targeting individual excited states one after another, which in some cases can perform better than the algorithm above (but not always and it depends).
ITensor could be a good platform to use, though, if you want to implement that algorithm yourself.
Also over the next year or so, we are designing a more general framework for our DMRG code where one can input custom “solvers” so then implement many different algorithms by only changing small functions that one passes into our DMRG code framework.
Miles