4 papers
Exact solution of three-dimensional (3D) spinless fermions
Zhidong Zhang
The three-dimensional (3D) Ising model is mapped into a 3D spinless fermionic model by the Jordan-Wigner transformation. The exact solution of the 3D model for spinless fermions is…
Universality of critical behaviors in the three-dimensional (3D) Ising magnets
Zhidong Zhang
This article gives a brief overview on recent advances in experiments of critical exponents in three groups of magnetic materials. Revisiting experimental data verifies that a univ…
Mathematical basis, phase transitions and singularities of (3+1)-dimensional phi4 scalar field model
Zhidong Zhang
The lambda phi4 scalar field model can be applied to interpret pion-pion scattering and properties of hadrons. In this work, the mathematical basis, phase transitions and singulari…
Relationship between spin-glass three-dimensional (3D) Ising model and traveling salesman problems
Zhidong Zhang
In this work, the relationship between a spin-glass three-dimensional (3D) Ising model with the lattice size N = mnl and the traveling salesman problem (TSP) in a 3D lattice is stu…