66 citations · 148 across the 5 of their papers we have counts for
5 papers
Algebraic Bethe ansatz for Q-operators of the open XXX Heisenberg chain with arbitrary spin
Rouven Frassek, István M. Szécsényi
In this note we construct Q-operators for the spin s open Heisenberg XXX chain with diagonal boundaries in the framework of the quantum inverse scattering method. Following the alg…
Entanglement Content of Quantum Particle Excitations I. Free Field Theory
Olalla A. Castro-Alvaredo, Cecilia De Fazio, Benjamin Doyon +1
We evaluate the entanglement entropy of a single connected region in excited states of one-dimensional massive free theories with finite numbers of particles, in the limit of large…
Entanglement Content of Quasi-Particle Excitations
Olalla A. Castro-Alvaredo, Cecilia De Fazio, Benjamin Doyon +1
We investigate the quantum entanglement content of quasi-particle excitations in extended many-body systems. We show that such excitations give an additive contribution to the bi-p…
LeClair-Mussardo series for two-point functions in Integrable QFT
B. Pozsgay, I. M. Szécsényi
We develop a well-defined spectral representation for two-point functions in relativistic Integrable QFT in finite density situations, valid for space-like separations. The resulti…
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…