165 citations · 967 across the 47 of their papers we have counts for
10 papers · 1 filter
Static and dynamic structure factors in the Haldane phase of the bilinear-biquadratic spin-1
K-H Muetter, A Schmitt, M Karbach +2
The excitation spectra of the T=0 dynamic structure factors for the spin, dimer, and trimer fluctuation operators as well as for the newly defined center fluctuation operator in th…
Exact two-spin dynamic structure factor of the one-dimensional s=1/2 Heisenberg-Ising antiferromagnet
A. Hamid Bougourzi, Michael Karbach, Gerhard Müller
The exact 2-spinon part of the dynamic spin structure factor for the one-dimensional =1/2 model at =0 in the antiferromagnetically ordered phase is calcul…
From one to two dimensions in quantum spin systems
A. Fledderjohann, K. -H. Mütter, M. -S. Yang +1
We study the first derivative of the staggered magnetization squared and the second derivative of the ground state energy per site. The parameter $θ…
Critical properties of 1-D spin 1/2 antiferromagnetic Heisenberg model
J. F. Audet, A. Fledderjohann, C. Gerhardt +4
We discuss numerical results for the 1-D spin 1/2 antiferromagnetic Heisenberg model with next-to-nearest neighbour coupling and in the presence of an uniform magnetic field. The m…
Charge and spin dynamics in the one-dimensional and models
Shu Zhang, Michael Karbach, Gerhard Müller +1
The impact of the spin-flip terms on the (static and dynamic) charge and spin correlations in the Luttinger-liquid ground state of the 1D model is assessed by comparison with…
Two-spinon dynamic structure factor of the one-dimensional S=1/2 Heisenberg antiferromagnet
Michael Karbach, Gerhard Müller, A. Hamid Bougourzi
The exact expression derived by Bougourzi, Couture, and Kacir for the 2-spinon contribution to the dynamic spin structure factor of he one-dimensional =1/2 Heisenb…