Density Matrix Renormalization Group Study of the $S=1/2$ Antiferromagnetic Heisenberg Chains with Quasiperiodic Exchange Modulation

Details Density Matrix Renormalization Group Study of the $S=1/2$ Antiferromagnetic Heisenberg Chains with Quasiperiodic Exchange Modulation Density Matrix Renormalization Group Study of the $S=1/2$ Antiferromagnetic Heisenberg Chains with Quasiperiodic Exchange Modulation

1999-07-08

arxiv.org/abs/cond-mat/9907115v1

J. Phys. Soc. Jpn. 68 (1999) 3177

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 6 figures

Scientific paper

10.1143/PTPS.138.519

The low energy behavior of the $S=1/2$ antiferromagnetic Heisenberg chains with precious mean quasiperiodic exchange modulation is studied by the density matrix renormalization group method. Based on the scaling behavior of the energy gap distribution, it is found that the ground state of this model belongs to the universality class different from that of the XY chain for which the precious mean exchange modulation is marginal. This result is consistent with the recent bosonization analysis of Vidal et al.

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