The quantum phase transition point between the insulator and the superfluid phase at unit filling factor of the infinite one‐dimensional Bose‐Hubbard model is numerically computed with a high accuracy. The method uses the infinite system version of the time evolving block decimation algorithm, here tested in a challenging case. We provide also the accurate estimate of the phase transition point at double occupancy.
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© 2008 American Institute of Physics.
2008
American Institute of Physics
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