We give an explicit proof within the framework of the Bethe Ansatz/string hypothesis of the factorization of multiparticle scattering in the antiferromagnetic spin-12 Heisenberg spin chain, for the case of 3 particles.

We analyze the quality of the quantum information transmission along a correlated quantum channel by studying the average fidelity between input and output states and the average output purity, giving bounds for the entropy of the channel. Noise correlations in the channel are modeled by the coupling of each channel use with an element of a one dimensional interacting quantum spin chain. Critic...

Using the Algebraic Bethe Ansatz we consider the correlation functions of the integrable higher spin chains. We apply a method recently developed for the spin 12 Heisenberg chain, based on the solution of the quantum inverse problem. We construct a representation for the correlation functions on a finite chain for arbitrary spin. Then we show how the string solutions of the Bethe equations can ...

The interaction of a peptide [Lys-Phe-Phe-Phe-Ile-Ile-Trp-OCH3] and its fatty acid derivatives [Lys-(epsilon-palmitoyl)-Phe-Phe-Phe-Ile-Ile-Trp-OCH3 and Lys-(epsilon-12-(9-anthroyloxy)stearic acid)-Phe-Phe-Phe-Ile-Ile-OCH3] with model membranes was investigated by fluorescence spectroscopy. The emission characteristics of the Trp fluorophore indicated that only the peptide with the fatty acid c...

The ferromagnetic integrable SU(3) spin chain provides the one loop anomalous dimension of single trace operators involving the three complex scalars of N = 4 supersymmetric Yang-Mills. We construct the non-linear sigma model describing the continuum limit of the SU(3) spin chain. We find that this sigma model corresponds to a string moving with large angular momentum in the five-sphere in AdS5...

We begin with a review of the antiferromagnetic spin 1/2 Heisenberg chain. In particular, we show that the model has particle-like excitations with spin 1/2, and we compute the exact bulk S matrix. We then review our recent work which generalizes these results. We first consider an integrable alternating spin 1/2 spin 1 chain. In addition to having excitations with spin 1/2, this model also has...