Square lattice Ising model \tilde{\chi }^{(5)} ODE in exact arithmetic
Square lattice Ising model \tilde{\chi }^{(5)} ODE in exact arithmetic
We obtain in exact arithmetic the order 24 linear differential operator $L_{24}$ and right hand side $E^{(5)}$ of the inhomogeneous equation$L_{24}(\Phi^{(5)}) = E^{(5)}$, where $\Phi^{(5)} =\tilde{\chi}^{(5)}-\tilde{\chi}^{(3)}/2+\tilde{\chi}^{(1)}/120$ is a linear combination of $n$-particle contributions to the susceptibility of the square lattice Ising model. In Bostan, et al. (J. Phys. A: Math. …