Quantum Density Matrix Truncation
This code is a mess, my bad.
I recommend using poetry to setup the environment and required packages.
A good place to start is the scripts folder which has code to run DMT on
To run the time evolution have a look a scripts/evolve_experiment.py. This script
- Initialises all the evolution hyperparameters.
- Prepare the groundstate of a TFIM using VUMPS.
- Initialise logging.
- Run the time evolution using the dmt algorithm, saving the iMPS tensor at each step.
To analyse the output from this time evolution see scripts/evolve_analyse.py. It basically just calculates the Loschmidt echo at each time step from the iMPS tensors found using iTEBD (see qdmt/tenpy-test.py) and the DMT algorithm. Then plots both on the exact loschmidt curve.
The output from this analysis looks like:
