Angular quantization and the density matrix renormalization group
arXiv:cond-mat/0106049 · doi:10.1142/S0217732301004364
Abstract
Path integral techniques for the density matrix of a one-dimensional statistical system near a boundary previously employed in black-hole physics are applied to providing a new interpretation of the density matrix renormalization group: its efficacy is due to the concentration of quantum states near the boundary.
8 pages, 3 figures, to appear in Mod. Phys. Lett. A