42 citations · 159 across the 7 of their papers we have counts for
7 papers
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…
Next Nearest-Neighbor Correlation Functions of the Spin-1/2 XXZ Chain at Massive Region
Minoru Takahashi, Go Kato, Masahiro Shiroishi
The second neighbor correlation functions of the spin- chain in the ground state are expressed in the form of three dimensional integrals. We show that these integrals…
Next Nearest-Neighbor Correlation Functions of the Spin-1/2 XXZ Chain at Critical Region
Go Kato, Masahiro Shiroishi, Minoru Takahashi +1
The correlation functions of the spin-1/2 XXZ spin chain in the ground state are expressed in the form of the multiple integrals. For -1< Delta <1, they were obtained by Jimbo and…
A direct calculation of the free energy from the Bethe ansatz equation for the Heisenberg model
Go Kato, Miki Wadati
Thermodynamics of the XXX Heisenberg model is studied. The trace of the Boltzmann weight with respect to the Hilbert space is taken in the thermodynamic limit with the number of up…
Direct Calculation of Thermodynamic Quantities for Heisenberg Model
Go Kato, Miki Wadati
The XXX Heisenberg model is studied at finite temperature. The free energy is derived without recourse to Thermal Bethe Ansatz method and Quantum Transfer Matrix method. The result…
Graphical representation of the partition function for a 1-D delta-function Bose gas
Go Kato, Miki Wadati
One-dimensional repulsive delta-function bose system is studied. By only using the Bethe ansatz equation, n-particle partition functions are exactly calculated. From this expressio…