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85 papers · 1 filter
Spinons in the strongly correlated copper oxide chains in SrCuO2
I. A. Zaliznyak, H. Woo, T. G. Perring +3
We have investigated the spin dynamics in the strongly correlated chain copper oxide SrCuO for energies up to eV using inelastic neutron scattering. We observe an…
Precise Determination of Phase Diagram for Two-Dimensional Hubbard Model with Filling- and Bandwidth-Control Mott Transitions: Grand-Canonical Path-Integral Renormalization Group Approach
Shinji Watanabe, Masatoshi Imada
A new numerical algorithm for interacting fermion systems to treat the grand-canonical ensemble is proposed and examined by extending the path-integral renormalization group method…
Universal Features of Quantized Thermal Conductance of Carbon Nanotubes
Takahiro Yamamoto, Satoshi Watanabe, Kazuyuki Watanabe
The universal features of quantized thermal conductance of carbon nanotubes (CNTs) are revealed through theoretical analysis based on the Landauer theory of heat transport. The pho…
G-type antiferromagnetism and orbital ordering due to the crystal field from the rare-earth ions induced by the GdFeO_3-type distortion in RTiO_3 with R=La, Pr, Nd and Sm
Masahito Mochizuki, Masatoshi Imada
The origin of the antiferromagnetic order and puzzling properties of LaTiO_3 as well as the magnetic phase diagram of the perovskite titanates are studied theoretically. We show th…
Optical conductivity of the Frohlich polaron
A. S. Mishchenko, N. Nagaosa, N. V. Prokof'ev +2
We present accurate results for optical conductivity of the three dimensional Frohlich polaron in all coupling regimes. The systematic-error free diagrammatic quantum Monte Carlo m…
Spin decoherence by spacetime curvature
Hiroaki Terashima, Masahito Ueda
A decoherence mechanism caused by spacetime curvature is discussed. The spin state of a particle is shown to decohere if only the particle moves in a curved spacetime. In particula…