Browsing by Subject "Bethe ansatz"

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  • Friedel oscillations in the open Hubbard chain 
    Bedürftig, G.; Brendel, B.; Frahm, Holger; Noack, R.M. (College Park (Maryland) : American Physical Society, 1998)
    Using the density-matrix renormalization-group (DMRG) technique, we calculate critical exponents for the one-dimensional Hubbard model with open boundary conditions with and without additional boundary potentials at both ...
  • On the critical behaviour of the integrable q-deformed OSp(3|2) superspin chain 
    Frahm, Holger; Hobuß, Konstantin; Martins, Márcio J. (Amsterdam : Elsevier B.V., 2019)
    This paper is concerned with the investigation of the massless regime of an integrable spin chain based on the quantum group deformation of the OSp(3|2) superalgebra. The finite-size properties of the eigenspectra are ...
  • Scattering in twisted yangians 
    Avan, Jean; Doikou, Anastasia; Karaiskos, Nikos (Bristol : Institute of Physics Publishing, 2016)
    We study the bulk and boundary scattering of the sl(N) twisted Yangian spin chain via the solution of the Bethe ansatz equations in the thermodynamic limit. Explicit expressions for the scattering amplitudes are obtained ...