307 citations · 1.7k across the 55 of their papers we have counts for
6 papers · 1 filter
Correlation Amplitudes for the spin-1/2 XXZ chain in a magnetic field
T. Hikihara, A. Furusaki
We present accurate numerical estimates for the correlation amplitudes of leading and main subleading terms of the two- and four-spin correlation functions in the one-dimensional s…
Exact duality relations in correlated electron systems
Tsutomu Momoi, Toshiya Hikihara
Using gauge transformations on electron bond operators, we derive exact duality relations between various order parameters for correlated electron systems. Applying these transform…
Boundary contributions to specific heat and susceptibility in the spin-1/2 XXZ chain
A. Furusaki, T. Hikihara
Exact low-temperature asymptotic behavior of boundary contribution to specific heat and susceptibility in the one-dimensional spin-1/2 XXZ model with exchange anisotropy 1/2 < Δ\le…
Dynamical Structure Factor in Cu Benzoate and other spin-1/2 antiferromagnetic chains
F. H. L. Essler, A. Furusaki, T. Hikihara
Recent experiments of the quasi-one-dimensional spin-1/2 antiferromagnet Copper Benzoate established the existence of a magnetic field induced gap. The observed neutron scattering…
Scalar chiral ground states of spin ladders with four-spin exchanges
Tsutomu Momoi, Toshiya Hikihara, Masaaki Nakamura +1
We show that scalar chiral order can be induced by four-spin exchanges in the two-leg spin ladder, using the spin-chirality duality transformation and matrix-product ansatz. Scalar…
Ground-state properties of nanographite systems with zigzag-shaped edges
Toshiya Hikihara, Xiao Hu, Hsiu-Hau Lin +1
A π-electron network in nanographite systems with zigzag edges exhibits strongly localized edge states, which are expected to have peculiar properties. We study effects of electron…