Finite-size scaling for the S=1/2 Heisenberg Antiferromagnetic Chain

Details Finite-size scaling for the S=1/2 Heisenberg Antiferromagnetic Chain Finite-size scaling for the S=1/2 Heisenberg Antiferromagnetic Chain

1998-10-07

arxiv.org/abs/cond-mat/9810075v1

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages Revtex, 3 figures

Scientific paper

10.1088/0305-4470/32/6/001

Corrections to the asymptotic correlation function in a Heisenberg spin-1/2 antiferromagnetic spin chain are known to vanish slowly (logarithmically) as a function of the distance r or the chain size L. This leads to significant differences with numerical results. We calculate the sub-leading logarithmic corrections to the finite-size correlation function, using renormalization group improved perturbation theory, and compare the result with numerical data.

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