The goal of this tutorial (given at the 2013 summer school on quantum spin liquids, in Trieste, Italy) is to present the density-matrix renormalization group (DMRG) in its traditional formulation (i.e. without using matrix product states). DMRG is a numerical method that allows for the efficient simulation of quantum model Hamiltonians. Since it is a low-entanglement approximation, it often works quite well for one-dimensional systems, giving results that are nearly exact.
Source code: https://github.com/simple-dmrg/simple-dmrg/
Documentation: http://simple-dmrg.readthedocs.org/
See also: sophisticated-dmrg, a more "sophisticated" code based on this tutorial.
- James R. Garrison (UCSB)
- Ryan V. Mishmash (UCSB)
Licensed under the MIT license. If you plan to publish work based on this code, please contact us to find out how to cite us.