摘要
Under the scaling limit, i.e. T→T_c+, H→O, R→∞, where h=const. H|T-T_c|^(-15/8) is fixed and small, while r=R|T-T_c|is fixed and large, we investigate the energy-spin correlation function <σ_(M1), _(N1)σ_(M2), _(N2)ε_(N3), N3> of Ising model with small external magnetic field. By cluster expansion we obtain its leading and next leading terms related to K_0(nr) and K_1(nr) up to order h^2.
Under the scaling limit, i.e. T→T<sub>c</sub>+, H→O, R→∞, where h=const. H|T-T<sub>c</sub>|<sup>-15/8</sup> is fixed and small, while r=R|T-T<sub>c</sub>|is fixed and large, we investigate the energy-spin correlation function <σ<sub>M1</sub>, <sub>N1</sub>σ<sub>M2</sub>, <sub>N2</sub>ε<sub>N3</sub>, N3> of Ising model with small external magnetic field. By cluster expansion we obtain its leading and next leading terms related to K<sub>0</sub>（nr） and K<sub>1</sub>（nr） up to order h<sup>2</sup>.
基金
Project supported in part by the National Natural Science Foundation of China.
