A matrix product representation library for Python

mpnum is a Python library providing flexible tools to implement new numerical schemes based on matrix product states (MPS). It is available under the BSD license at

• mpnum source on Github

Documentation

• Introduction
  • Contributing
  • Graphical notation for tensors
    • Basics
    • Matrix product states (MPS)
    • Matrix product operators (MPO)
    • Local purification form MPS (PMPS)
    • Matrix product arrays
  • Next steps
• Extending mpnum
  • Code style
  • Automated unit tests
  • Test coverage
  • Building the documentation
• mpnum reference
  • Basic matrix product array functionality
  • Random test matrix product arrays
  • Matrix product states and operators
    • Definitions
      • Matrix product state (MPS)
      • Matrix product operator (MPO)
      • Locally purified matrix product state (PMPS)
  • Eigenvalues and eigenvectors (DMRG)
  • Local POVMs
  • Matrix-product POVMs
    • Linear combinations of functions of POVM outcomes
    • Class and function reference
  • Internal utility functions
    • General tools
    • NumPy ndarray with named axes
    • Unit test utilities
    • Todo list (autogenerated)

Indices and tables

• Index
• Module Index