Density Matrix and Tensor Network Renormalization

ISBN-13: 9781009398701 / Twarda / 2023 / 470 str.

Beijing) Xiang Tao (Chinese Academy of Sciences

Opis

An introduction to tensor network renormalization, a powerful tool for the study of quantum many-body problems and complex systems.

Recenzje

'This authoritative introduction will become an invaluable resource for newcomers and experts alike. A very welcome feature is the use of a unified set of notational and diagrammatic conventions, employed consistently throughout the text. This greatly aids the reader in recognizing recurring strategies and ideas.' Jan von Delft, Ludwig-Maximilians-University Munich

Spis treści

Preface; Abbreviations; Unit used; Notations and graphical representations; 1. Introduction; 2. Basic algebra of tensors; 3. Tensor network representation of classical statistical methods; 4. Tensor-network ansatz of wave functions; 5. Criterion of truncation: symmetric systems; 6. Real-space DMRG; 7. Implementation of symmetries; 8. DMRG with non-local basis states; 9. Matrix Product States; 10. Infinite Matrix Product States; 11. Determination of MPS; 12. Continuous Matrix Product States; 13. Classical Transfer Matrix Renormalization; 14. Criterion of truncation: non-symmetric systems; 15. Renormalization of quantum transfer matrices; 16. MPS solution of QTMRG; 17. Dynamical Correlation Functions; 18. Time-dependent methods; 19. Tangent-space operations; 20. Tangent-space approaches; 21. Tree Tensor Network States; 22. Two-dimensional tensor network states; 23. Coarse graining tensor renormalization; Appendix A; References; Index.