E. M. Stoudenmire, Steven R. White
We demonstrate how to parallelize the density matrix renormalization group (DMRG) algorithm in real space through a straightforward modification of serial DMRG. This makes it possible to apply at least 10 times the computational power to challenging simulations, greatly accelerating investigations of two-dimensional systems and large parameter spaces. We discuss details of the algorithm and present benchmark results, including a study of valence-bond-solid order in the square-lattice Q2 model.
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http://arxiv.org/abs/1301.3494
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