We present a numerical implementation of the density matrix renormalization group (DMRG) using the discrete variable representation (DVR) basis set. One main advantage of using the local DVR basis sets is that the computations of one-electron integral and two-electron repulsion integrals are drastically simplified. For comparison, we further implemented DVR complete active space configuration interaction (CASCI) using canonical molecular orbitals. These methods are applied to a one-dimensional pseudo-hydrogen chain under screened Coulomb potential. The DMRG ground state energy agrees with CASCI up to 0.1 mEh with a very small number of bond dimensions.
On the Ordering of Sites in the Density Matrix Renormalization Group using Quantum Mutual Information
Variational Numerical Renormalization Group: Bridging the gap between NRG and Density Matrix Renormalization Group
Quantum phase transition by employing trace distance along with the density matrix renormalization group
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