Figure 3From: GPU-enabled particle-particle particle-tree scheme for simulating dense stellar cluster system Maximum relative energy error as a function of θ . For all runs, we use \(\eta=0.1\), \(\Delta t_{\max} =\Delta t_{\mathrm{soft}}/4\) and \(\Delta r_{\mathrm{buff}}=3\sigma\Delta t_{\mathrm{soft}}\).Back to article page