144 citations · 271 across the 4 of their papers we have counts for
4 papers
Quantum Stability for the Heisenberg Ferromagnet
Till Bargheer, Niklas Beisert, Nikolay Gromov
Highly spinning classical strings on RxS^3 are described by the Landau-Lifshitz model or equivalently by the Heisenberg ferromagnet in the thermodynamic limit. The spectrum of this…
Quantum Deformations of the One-Dimensional Hubbard Model
Niklas Beisert, Peter Koroteev
The centrally extended superalgebra psu(2|2)xR^3 was shown to play an important role for the integrable structures of the one-dimensional Hubbard model and of the planar AdS/CFT co…
Yangian Symmetry of Long-Range gl(N) Integrable Spin Chains
Niklas Beisert, Denis Erkal
An interesting type of spin chain has appeared in the context of the planar AdS/CFT correspondence: It is based on an integrable nearest-neighbor spin chain, and it is perturbative…
The Four-Loop Dressing Phase of N=4 SYM
N. Beisert, T. McLoughlin, R. Roiban
We compute the dilatation generator in the su(2) sector of planar N=4 super Yang-Mills theory at four-loops. We use the known world-sheet scattering matrix to constrain the structu…