除此之外,各个格点可能受到外磁场(external magnetic field)H的影响。 图1与图2分别显示了 1维与2维情形下的Ising Model。 图1 1维情形下的Ising Model 图2 2维情形下的Ising Model 2. Ising模型下的各物理量公式 Ising模型下的一个配置(configuration)为对于系统内各个格点 σi 所关联的变量 σi进行−1...
52-57 Ansatz for the Two-Dimensional Ising Model in an External Magnetic Field Moorad Alexanian Department of Physics and Physical Oceanography University of North Carolina Wilmington, Wilmington, NC 28403-5606 E-mail: alexanian@uncw.edu (Received: November 11, 2024; Revised: November 30, 2024; ...
Ising model on the hypercubic lattice with a summable magnetic field has a first-order phase transition and, for any positive (resp. negative) and bounded magnetic field, the model does not present the phase transition phenomenon whenever lim inf h i >0, where is the external magnetic field...
matter, such as high-temperature superconductivity or magnonic Bose-Einstein condensation, can emerge in the vicinity of a quantum critical point [1], which identifies a zero-temperature phase transition tuned by an external parameter, e.g., chemical substitution or applied magnetic field [2,3]....
Exact solution of the one-dimensional spin-(frac{mathsf 3}{mathsf 2})Ising model in magnetic field In this paper, we study the Ising model with general spin S in presence of an external magnetic field by means of the equations of motion method and of the... A Avella,F Mancini - 《Eu...
integrable field theoryIsing modelfree-field representationThe calculation of the spin-spin correlation function G(x) = of the two-dimensional Ising Model in a magnetic field has been a long-standing problem of statistical mechanics. Solution of this problem has been recently obtained by using a ...
monte carlo simulation has been used to determine the phase diagram of a metamagnet ising model in the presence of a random and uniform magnetic field. the... A Weizenmann,M Godoy,ASD Arruda - 《Brazilian Journal of Physics》 被引量: 4发表: 2006年 Ising metamagnet under staggered field ...
Ising model in an oscillating magnetic field: Mean-field theory I consider the dynamics of a soft-spin Ising magnet, subject to the time-varying external magnetic field h(t)=h cos\\ensuremath{\\Omega}t. The system is mo... MF Zimmer - 《Phys Rev E Stat Phys Plasmas Fluids Relat Inte...
We study a triangular Ising model subject to nearest-neighbor pair interactions K, an external magnetic field H, and triangular three-spin interactions P. ... M Schick,JS Walker,M Wortis - 《Physical Review B》 被引量: 126发表: 1977年 Properties of the Ising Square Lattice with Next-Neares...
关键词: Renormalization Group Field Theories in Lower Dimensions Boundary Quantum Field Theory 被引量: 8 摘要: In a nonperturbative proof of the g-theorem of Affleck and Ludwig was put forward. In this paper we illustrate how the proof of works on the example of the 2D Ising model at ...