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Abstract:

The spin one-half Heisenberg chain with U q [ SU (2)] symmetry is studied via density-matrix renormalization. Ground-state energy and q-symmetric correlation functions are calculated for the non-Hermitian case with integer r. This gives bulk and surface exponents for (para)fermionic correlations in the related Ising and Potts models. The case of real q corresponding to a diffusion problem is treated analytically.

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Received: 18 February 1998 / Accepted: 17 March 1998

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Kaulke, M., Peschel, I. A DMRG study of the -symmetric Heisenberg chain. Eur. Phys. J. B 5, 727–734 (1998). https://doi.org/10.1007/s100510050496

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  • DOI: https://doi.org/10.1007/s100510050496

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