A Zero-Dissipative Runge-Kutta-Nyström Method with Minimal Phase-Lag

Figure 1

(Energy Conservation). The logarithm error of energy (ERR) at each integration point when solving the harmonic oscillator for $\omega =1$ with initial condition $q_0=1\text{,}$$q_0^{\prime }=0$ and $\mathrm{\Delta }t=1/5$.