Pletyukhov, Mikhail, Schuricht, Dirk, Schoeller, Herbert
Using a nonequilibrium renormalization group method we study the real-time evolution of spin and current in the anisotropic Kondo model (both antiferromagnetic and ferromagnetic) at finite magnetic...
Spontaneous Parity Violation in a Quantum Spin Chain (2009)
Rachel, Stephan, Schuricht, Dirk, Scharfenberger, Burkhard, Thomale, Ronny, Greiter, Martin
We report on a spontaneous breakdown of parity in the ground state of a spin Hamiltonian involving nearest-neighbor interactions. This occurs for a one-dimensional model where spins transform under...
Dynamical spin-spin correlation functions in the Kondo model out of equilibrium (2009)
Schuricht, Dirk, Schoeller, Herbert
We calculate the dynamical spin-spin correlation functions of a Kondo dot coupled to two noninteracting leads held at different chemical potentials. To this end we generalize a recently developed...
Valence bond solid states with symplectic symmetry (2008)
Schuricht, Dirk, Rachel, Stephan
We introduce a one-dimensional valence bond solid (VBS) state with symplectic symmetry SP(n) and construct the corresponding parent Hamiltonian. We argue that there is a gap in the spectrum. We...
Local density of states of 1D Mott insulators and CDW states with a boundary (2008)
Schuricht, Dirk, Essler, Fabian H. L., Jaefari, Akbar, Fradkin, Eduardo
We determine the local density of states (LDOS) of one-dimensional incommensurate charge density wave (CDW) states in the presence of a strong impurity potential, which is modeled by a boundary. We...
Many-spinon states and representations of Yangians in the SU(n) Haldane--Shastry model (2007)
We study the relation of Yangians and spinons in the SU(n) Haldane--Shastry model. The representation theory of the Yangian is shown to be intimately related to the fractional statistics of the...
Dynamical response functions in the quantum Ising chain with a boundary (2007)
Schuricht, Dirk, Essler, Fabian H. L.
We determine dynamical response functions $$ in the scaling limit of the quantum Ising chain on the half line in the presence of a boundary magnetic field. Using a spectral representation in terms of...
Many-spinon states and the secret significance of Young tableaux (2007)
Greiter, Martin, Schuricht, Dirk
We establish a one-to-one correspondence between the Young tableaux classifying the total spin representations of N spins and the exact eigenstates of the the Haldane-Shastry model for a chain with N...
Greiter, Martin, Rachel, Stephan, Schuricht, Dirk
We introduce several exact models for SU(3) spin chains: (1) a translationally invariant parent Hamiltonian involving four-site interactions for the trimer chain, with a three-fold degenerate ground...
Charge excitations in SU(n) spin chains: exact results for the 1/r^2 model (2006)
Thomale, Ronny, Schuricht, Dirk, Greiter, Martin
We study the one- and two-holon excitations of the SU(3) Kuramoto-Yokoyama model on the level of explicit wave functions, and generalize the calculations to the case of SU(n). We obtain the exact...
Exact two-holon wave functions in the Kuramoto-Yokoyama model (2006)
Thomale, Ronny, Schuricht, Dirk, Greiter, Martin
We construct the explicit two-holon eigenstates of the SU(2) Kuramoto-Yokoyama model at the level of explicit wave functions. We derive the exact energies and obtain the individual holon momenta,...
Fraktionale Quantisierung und Yangian Symmetrie in SU (n) Spinketten / (2006)
Thesis (doctoral)--Universität Karlsruhe (T.H.), 2006.
Coloron excitations of the SU(3) Haldane--Shastry model (2005)
Schuricht, Dirk, Greiter, Martin
In a recent publication, we proposed two possible wave functions for the elementary excitations of the SU(3) Haldane--Shastry model (HSM), but argued on very general grounds that only one or the...
Comment on "Spinon Attraction in Spin-1/2 Antiferromagnetic Chains" (2005)
Greiter, Martin, Schuricht, Dirk
Comment on B.A. Bernevig, D. Giuliano, and R.B. Laughlin, Phys. Rev. Lett. 86, 3392 (2001).
Schuricht, Dirk, Greiter, Martin
We propose two possible trial wave functions for the elementary excitations of the SU(3) Haldane--Shastry model, but then argue on very general grounds that only one or the other can be a valid...
Reply to Bernevig, Giuliano, and Laughlin (2004)
Greiter, Martin, Schuricht, Dirk
Reply to Bernevig, Giuliano, and Laughlin: cond-mat/0410147
Is there an attraction between spinons in the Haldane--Shastry model? (2004)
Greiter, Martin, Schuricht, Dirk
While the Bethe Ansatz solution of the Haldane--Shastry model appears to suggest that the spinons represent a free gas of half-fermions, Bernevig, Giuliano, and Laughlin (BGL) (cond-mat/0011069,...
Contemplations on Dirac's equation in quaternionic coordinates (2004)
Schuricht, Dirk, Greiter, Martin
A formulation of Dirac's equation using complex-quaternionic coordinates appears to yield an enormous gain in formal elegance, as there is no longer any need to invoke Dirac matrices. This...
Greiter, Martin, Schuricht, Dirk
A suitable parameterization of space-time in terms of one complex and three quaternionic imaginary units allows Lorentz transformations to be implemented as multiplication by complex-quaternionic...