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TT: Fachverband Tiefe Temperaturen

TT 5: Correlated Electrons - (General) Theory

TT 5.12: Vortrag

Montag, 26. März 2007, 17:30–17:45, H18

Constructing an exact CSL Hamiltonian — •Ronny Thomale¹, Darrell Schroeter², Eliot Kapit³, and Martin Greiter¹ — ¹Institut für Theorie der Kondensierten Materie, D 76128 Karlsruhe — ²Department of Physics, Occidental College, Los Angeles, CA — ³Department of Physics, University of Chicago, Chicago, IL

We construct a Hamiltonian that singles out the chiral spin liquid on a square lattice with periodic boundary conditions as the exact and, apart from the two-fold topological degeneracy, unique ground state. The model provides a framework to study spinon excitations and the fractional statistics they obey in two dimensions, an issue of interest to the fields of topological quantum phases, high-T_c superconductivity, and quantum computing.