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ITensor - Intelligent Tensor Library
Features include:
Full-featured matrix product state and DMRG layer
Quantum number conserving (block-sparse) tensors; same interface as dense tensors
Complex numbers handled lazily: no efficiency...
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ITensor
ITensor
Thomas E. Baker—August 8, 2015
Let's calculate the two operator correlation function for a five site spin chain which is demonstrated in the coding recipe measuring a correlator for an MPS. T...
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ITensor
ITensor
ITensor
An ITensor is a tensor with named indices (of type Index).
The key feature of the ITensor is automatic contraction over all matching indices,
similar to Einstein summation.
An ITensor...
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ITensor
ITensor
Index Objects
The most basic element of ITensor is not actually a tensor: it is a tensor index,
an object of type
Index. (By tensor index we mean i,j, or k in an expression
like @@T_{ijk}@@...
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ITensor
ITensor
The simplest way to construct an ITensor is to provide its indices:
auto i = Index(2,"index i");
auto j = Index(3,"index j");
auto k = Index(4,"index k");
auto T = ITensor(i,j,k);
This creat...
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ITensor
ITensor
In-depth Documentation. Detailed interfaces of ITensor classes and functions.
Tutorials. Background reading on tensor networks and guides to ITensor features.
Code Formulas. Sample codes for c...