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Title:

Efficient variational diagonalization of fully many-body localized Hamiltonians

Document type:
Zeitschriftenaufsatz
Author(s):
Pollmann, Frank; Khemani, Vedika; Cirac, J. Ignacio; Sondhi, S. L.
Abstract:
We introduce a variational unitary matrix product operator based variational method that approximately finds all the eigenstates of fully many-body localized one-dimensional Hamiltonians. The computational cost of the variational optimization scales linearly with system size for a fixed depth of the UTN 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 r...     »
Journal title:
Physical Review B 2016-07
Year:
2016
Journal volume:
94
Journal issue:
4
Fulltext / DOI:
doi:10.1103/physrevb.94.041116
Publisher:
American Physical Society (APS)
E-ISSN:
2469-99502469-9969
Date of publication:
28.07.2016
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