DMRG Experiments

Code and notebooks for density matrix renormalization group (DMRG) and related tensor-network simulations. Scripts implement DMRG/cooling routines, circuit utilities, and experiment helpers; notebooks capture exploratory runs and diagnostics.

Layout

• algo_dmrg.py, algo_boundary.py, algo_cooling.py: core DMRG and boundary/cooling routines.
• dmrg.py, svd.py: runnable scripts for DMRG workflows and SVD-based variants.
• circuits.py: circuit construction and Qiskit helpers.
• quf.py, register_.py: utilities (partitioning, contractions, registration) used across scripts.
• dmrg*.ipynb, mps_*.ipynb, plot.ipynb, prac.ipynb: experiments and visualizations.
• cash/: local cache/artifacts (ignored).
• store/, z2_exact/: reference data and helper modules.

Setup

python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
# For GPU JAX/PyTorch, install vendor wheels as needed.

Notes

• .gitattributes treats notebooks as binary to avoid noisy diffs; use nbdiff or screenshots for review.
• .gitignore excludes checkpoints, caches, cash/, and nohup.out. Keep transient data there or outside the repo.
• Large generated data should stay out of version control or use Git LFS if required.