Lee, J.Y; Liu, K.L - In: Physica A: Statistical Mechanics and its Applications 286 (2000) 3, pp. 573-587
We study the statistical mechanics of two models of nonlinear Klein–Gordon chain: the ‘φ8-chain’ with the single-site potential v(y)=a(y2−1)4, and the Gaussian double-well model with v(y)=12ky2+bexp(−12cy2) where a,b,c and k are positive constants. The thermodynamics of the classical...