Quantum annealing of the random-field Ising model by transverse ferromagnetic interactions (2007)
Suzuki, Sei, Nishimori, Hidetoshi, Suzuki, Masuo
We introduce transverse ferromagnetic interactions, in addition to a simple transverse field, to quantum annealing of the random-field Ising model to accelerate convergence toward the target ground...
Finding Exponential Product Formulas of Higher Orders (2005)
Hatano, Naomichi, Suzuki, Masuo
In the present article, we review a continual effort on generalization of the Trotter formula to higher-order exponential product formulas. The exponential product formula is a good and useful...
Non-Universal Critical Behaviour of Two-Dimensional Ising Systems (2004)
Minami, Kazuhiko, Suzuki, Masuo
Two conditions are derived for Ising models to show non-universal critical behaviour, namely conditions concerning 1) logarithmic singularity of the specific heat and 2) degeneracy of the ground...
Some Exact Formulas on Long-Range Correlation Functions of the Rectangular Ising Lattice (2003)
Chang, Shu-Chiuan, Suzuki, Masuo
We study long-range correlation functions of the rectangular Ising lattice with cyclic boundary conditions. Specifically, we consider the situation in which two spins are on the same column, and at...
Towards Bose-Einstein Condensation of Electron Pairs: Role of Schwinger Bosons (2001)
It can be shown that the bosonic degree of freedom of the tightly bound on-site electron pairs could be separated as Schwinger bosons. This is implemented by projecting the whole Hilbert space into...
On the basis of gauge invariance, it is proven in an elementary and straightforward manner, but without invoking any {\it ad hoc} assumption, that the existence of off-diagonal long-range order in...
The Dynamical Critical Behavior of the (1999)
Fugao Wang, Naoki Kawashima, Masuo Suzuki
The dynamical critical behavior of the SigmaJ Ising spin glass is investigated at the damage spreading threshold T d . The dynamical critical exponent z is observed as z = 1:75 Sigma 0:08 at T d =...
Study on dynamical critical exponents of the Ising model using the damage spreading method (1999)
Fugao Wangz, Naomichi Hatano, Masuo Suzuki
. In present paper, the dynamical behaviours of the Ising model with heat bath dynamics is studied. According to our investigation on the model using the damage spreading method, the dynamical phase...
This paper has been withdrawn.
A universal relation connecting Fermi surface (FS) to the symmetry of the gap function in BCS-like superconductors is derived. It is found that the shape of the FS can be deduced directly from the...
Quantum Analysis and Nonequilibrium Response (1998)
The quantum derivatives of $e^{-A}, A^{-1}$ and $\log A$, which play a basic role in quantum statistical physics, are derived and their convergence is proven for an unbounded positive operator $A$ in...
The quantum statistical mechanics of an ideal gas with a general free-particle energy obeying fractional exclusion statistics are systematically investigated in arbitrary dimensions. The pressure...
Symmetry Properties on Magnetization in the Hubbard Model at Finite Temperatures (1998)
By making use of some symmetry properties of the relevant Hamiltonian, two fundamental relations between the ferromagnetic magnetization and a spin correlation function are derived for the $d...
General Formulation of Quantum Analysis (1998)
A general formulation of noncommutative or quantum derivatives for operators in a Banach space is given on the basis of the Leibniz rule, irrespective of their explicit representations such as the...
Does the Hubbard Model Show $d_{x^2-y^2}$ Superconductivity? (1998)
It is rigorously shown that the two-dimensional Hubbard model with narrow bands (including next nearest-neighbor hopping, etc.) does not exhibit $d_{x^2 -y^2}$-wave pairing long-range order at any...
Nishiyama, Yoshihiro, Suzuki, Masuo
The ground state and excitation spectra of the $S=1$ Heisenberg spin chain with hole hopping are investigated by means of the numerical-diagonalization method and by the help of the Zhang-Arovas...
Hidden Orders and RVB Formation of the Four-Leg Heisenberg Ladder Model (1995)
Nishiyama, Yoshihiro, Hatano, Naomichi, Suzuki, Masuo
The ground state of the four-chain Heisenberg ladder model is numerically investigated. Hidden-order correlations suitable for the system are introduced and calculated with an emphasis on the...
Takasu, Masako, Miyashita, Seiji, Suzuki, Masuo, Kanada, Yasumasa
The S = 1/2 ferromagnetic XY model on the triangular lattice is investigated by quantum Monte Carlo methods based on the Suzuki-Trotter formula. The squared magnetization (M2x) / N2 is calculated for...
Takasu, Masako, Miyashita, Seiji, Suzuki, Masuo, Kanada, Yasumasa
The S = 1/2 ferromagnetic XY model on the triangular lattice is investigated by quantum Monte Carlo methods based on the Suzuki-Trotter formula. The squared magnetization (M2x) / N2 is calculated for...
Takasu, Masako, Miyashita, Seiji, Suzuki, Masuo, Kanada, Yasumasa
The S = 1/2 ferromagnetic XY model on the triangular lattice is investigated by quantum Monte Carlo methods based on the Suzuki-Trotter formula. The squared magnetization (M2x) / N2 is calculated for...