104 citations · 536 across the 35 of their papers we have counts for
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math-ph2015★ 23 cited
Q-operators for the open Heisenberg spin chain
Rouven Frassek, Istvan M. Szecsenyi
We construct Q-operators for the open spin-1/2 XXX Heisenberg spin chain with diagonal boundary matrices. The Q-operators are defined as traces over an infinite-dimensional auxilia…
hep-th2015★ 56 cited
On-shell Diagrams, Graßmannians and Integrability for Form Factors
Rouven Frassek, David Meidinger, Dhritiman Nandan +1
We apply on-shell and integrability methods that have been developed in the context of scattering amplitudes in N=4 SYM theory to tree-level form factors of this theory. Focussing…
math-ph2015
Algebraic Bethe ansatz for Q-operators: The Heisenberg spin chain
Rouven Frassek
We diagonalize Q-operators for rational homogeneous sl(2)-invariant Heisenberg spin chains using the algebraic Bethe ansatz. After deriving the fundamental commutation relations re…