43 citations · 128 across the 4 of their papers we have counts for
4 papers
Spectrum and transition rates of the XX chain analyzed via Bethe ansatz
Daniel Biegel, Michael Karbach, Gerhard Muller +1
As part of a study that investigates the dynamics of the s=1/2 XXZ model in the planar regime |Delta|<1, we discuss the singular nature of the Bethe ansatz equations for the case D…
Transition rates via Bethe ansatz for the spin-1/2 planar XXZ antiferromagnet
Daniel Biegel, Michael Karbach, Gerhard Mueller
A novel determinantal representation for matrix elements of local spin operators between Bethe wave functions of the one-dimensional s=1/2 XXZ model is used to calculate transition…
Transition rates via Bethe ansatz for the spin-1/2 Heisenberg chain
Daniel Biegel, Michael Karbach, Gerhard Muller
We use the exact determinantal representation derived by Kitanine, Maillet, and Terras for matrix elements of local spin operators between Bethe wave functions of the one-dimension…
Quasiparticles governing the zero-temperature dynamics of the 1D spin-1/2 Heisenberg antiferromagnet in a magnetic field
Michael Karbach, Daniel Biegel, Gerhard Muller
The T=0 dynamical properties of the one-dimensional (1D) Heisenberg antiferromagnet in a uniform magnetic field are studied via Bethe ansatz for cyclic chains of sites.…