Spin-spin correlation functions of the q-VBS state of an integer spin model
نویسندگان
چکیده
We consider the valence-bond-solid ground state of the q-deformed higher-spin AKLT model (q-VBS state). We investigate the eigenvalues and eigenvectors of a matrix (G matrix), which is constructed from the matrix product representation of the q-VBS state. We compute the longitudinal and transverse spin-spin correlation functions, and determine the correlation amplitudes and correlation lengths for real q.
منابع مشابه
Schwinger-boson mean-field theory for S
in the study of one-dimensional spin chains with nearestneighbor antiferromagnetic exchange interaction J, following the conjecture by Haldane' that integer spin chains have a singlet ground state with a finite gap EH in the excitation spectrum, whereas the excitation spectrum for half-integer spins is gapless. More recently, the physics of S =1 open spin chains has received new attention stimu...
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