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Efficient variational diagonalization of fully many-body localized Hamiltonians by Pollmann, Frank; Khemani, Vedika; Cirac, J. Ignacio; Sondhi, S. L. is a scholarly article available to read on EtoBox.

What is Efficient variational diagonalization of fully many-body localized Hamiltonians about?

We introduce a unitary matrix-product operator (UMPO) based variational method that approximately finds all the eigenstates of fully many-body localized (fMBL) one-dimensional Hamiltonians. The computational cost of the variational optimization scales linearly with system size for a fixed bond dimension of the UMPO ansatz. We demonstrate the usefulness of our approach by considering the Heisenberg chain in a strongly disordered magnetic field for which we compare the approximation to exact diagonalization results.

Author

Pollmann, Frank; Khemani, Vedika; Cirac, J. Ignacio; Sondhi, S. L.

Published

2015

Language

EN