https://doi.org/10.1007/s100510050496
A DMRG study of the q-symmetric Heisenberg chain*
Fachbereich Physik, Freie Universität Berlin, Arnimallee
14, 14195 Berlin, Germany
Corresponding author: a kaulke@physik.fu-berlin.de
Received:
18
February
1998
Accepted:
17
March
1998
Published online: 15 October 1998
The spin one-half Heisenberg chain with 
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.
PACS: 05.70.Jk – Critical point phenomena / 02.70.-c – Computational techniques / 75.10.Jm – Quantized spin models
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
