Add tensor train representations (Vidal, Inverse, Site) #6
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…ntractions - Move VidalTensorTrain, InverseTensorTrain, and SiteTensorTrain from T4AMPOContractions.jl - Add helper functions: isleftorthogonal, isrightorthogonal, reshapephysicalleft, reshapephysicalright - Extend _factorize to support diamond parameter for VidalTensorTrain construction - Add conversion methods between tensor train representations - Add comprehensive tests for all representations - Update exports in T4ATensorTrain.jl - Fix JET test configuration to use target_modules instead of deprecated target_defined_modules
- Test orthogonality through properly constructed VidalTensorTrain and InverseTensorTrain - Use 4D tensors (MPO-like) matching the original test pattern - Add comprehensive tests for singular value contractions
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This PR moves tensor train representations (VidalTensorTrain, InverseTensorTrain, SiteTensorTrain) from T4AMPOContractions.jl into T4ATensorTrain.jl.
Changes
Testing