Symmetrized DMRG Method for Excited States of Hubbard Models

S. Ramasesha, Swapan K. Pati, H. R. Krishnamurthy +2

We extend the density matrix renormalization group method to exploit Parity, $C_2$ (rotation by $\pi$) and electron-hole symmtries of model Hamiltonians. We demonstrate the power of…