43 citations · 110 across the 5 of their papers we have counts for
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Density matrix for the kink ground state of the ferromagnetic XXZ chain
Kohei Motegi, Kazumitsu Sakai
The exact expression for the density matrix of the kink ground state of the ferromagnetic XXZ chain is obtained. Utilizing this, we exactly calculate various correlation functions…
Correlation functions of an interacting spinless fermion model at finite temperature
Kohei Motegi, Kazumitsu Sakai
We formulate correlation functions for a one-dimensional interacting spinless fermion model at finite temperature. By combination of a lattice path integral formulation for thermod…
Dynamical correlation functions of the XXZ model at finite temperature
Kazumitsu Sakai
Combining a lattice path integral formulation for thermodynamics with the solution of the quantum inverse scattering problem for local spin operators, we derive a multiple integral…
Thermomagnetic Power and Figure of Merit for Spin-1/2 Heisenberg Chain
Shunsuke Furukawa, Dai Ikeda, Kazumitsu Sakai
Transport properties in the presence of magnetic fields are numerically studied for the spin-1/2 Heisenberg XXZ chain. The breakdown of the spin-reversal symmetry due to the magnet…
Exact Analysis of ESR Shift in the Spin-1/2 Heisenberg Antiferromagnetic Chain
Y. Maeda, K. Sakai, M. Oshikawa
A systematic perturbation theory is developed for the ESR shift and is applied to the spin-1/2 Heisenberg chain. Using the Bethe ansatz technique, we exactly analyze the resonance…
Third-neighbor and other four-point correlation functions of spin-1/2 XXZ chain
Go Kato, Masahiro Shiroishi, Minoru Takahashi +1
The correlation functions of the spin-1/2 XXZ chain in the ground state were expressed in the form of multiple integrals for -1<Δ\leq 1 and 1<Δ. In particular, adjacent four-point…