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Ordered Phases of the Anisotropic Kagome Lattice Antiferromagnet in a Field
E. M. Stoudenmire, Leon Balents
The antiferromagnetic Heisenberg model on an anisotropic kagome lattice may be a good minimal model for real magnetic systems as well as a limit from which the isotropic case can b…
Gradient expansion approach to multiple-band Fermi liquids
Ryuichi Shindou, Leon Balents
Promoted by the recent progress of Berry phase physics in spin galvanomagnetic communities, we develop a systematic derivation of the reduced Keldysh equation (RKE) which captures…
Spinons and triplons in spatially anisotropic frustrated antiferromagnets
Masanori Kohno, Oleg A. Starykh, Leon Balents
The search for elementary excitations with fractional quantum numbers is a central challenge in modern condensed matter physics. We explore the possibility in a realistic model for…
Odd-Integer Quantum Hall Effect in Graphene: Interaction and Disorder Effects
L. Sheng, D. N. Sheng, F. D. M. Haldane +1
We study the competition between the long-range Coulomb interaction, disorder scattering, and lattice effects in the integer quantum Hall effect (IQHE) in graphene. By direct trans…
Emergence of U(1) symmetry in the 3D XY model with Zq anisotropy
Jie Lou, Anders W. Sandvik, Leon Balents
We study the three-dimensional XY model with a Z_q anisotropic term. At temperatures T < Tc this dangerously irrelevant perturbation is relevant only above a length scale Lambda, w…
Semiclassical dynamics and long time asymptotics of the central-spin problem in a quantum dot
Gang Chen, Doron L. Bergman, Leon Balents
The spin of an electron trapped in a quantum dot is a promising candidate implementation of a qubit for quantum information processing. We study the central spin problem of the eff…