ITensor Library Classes and Methods

Detailed information about every method and function in the ITensor library.

The documentation may omit minor details that do not change how you use a method, like describing a particular function as f(ITensor T) even though its actual signature is f(ITensor const& T).



  • Index. Tensor index.

  • Special Index modes:

    • QN Index. Index carrying QN block information.
  • IndexVal. Index-value pair.

  • IndexSet. Container for storing indices.

  • QN. Abelian quantum numbers.


Matrix product states (MPS) and matrix product operators (MPO)

Density matrix renormalization group (DMRG)

  • Sweeps. Class for specifying DMRG accuracy parameters.

  • DMRG. Interface for running DMRG calculations.

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