Simulation data of tracer particles diffusing in a granular gas of inelastic hard spheres under homogeneous cooling state

There are two data files: DatosSimuHCS_rlm.dat and DatosSimuHCS_v1v2.dat. The file DatosSimuHCS_rlm.dat contains simulation data for tracers diffusing within a granular gas in the HCS state. Both tracers and the gas particles are inelastic hard spheres. Each row of the file contains the parameters defining the tracer-gas system and simulation results for that system. The simulation data for each line were obtained through simulations with 10^5 tracers, conducting up to 3×10^5 runs, each comprising an average number of 400 proposed candidates in every Monte Carlo step. The first four columns of each line contain, in this order, the values of the parameters that define the system: \alpha, \alpha_0, m_0/m, \sigma_0/\sigma. The following seven columns contain simulation results for, in this order: \langle R^2\rangle/(\langle N\rangle \langle r_1^2\rangle), \langle r_1^2\rangle/\langle r_1\rangle^2, \langle \vec{r}_1\cdot \vec{r}_2\rangle/\langle r_1^2\rangle, \langle \vec{r}_1\cdot \vec{r}_3\rangle/\langle r_1^2\rangle, \langle \vec{r}_1\cdot \vec{r}_4\rangle/\langle r_1^2\rangle, \langle \vec{r}_1\cdot \vec{r}_5\rangle/\langle r_1^2\rangle, \langle r_1\rangle This last value is given in machine units. The file DatosSimuHCS_v1v2.dat contains simulation data for pre- and post-collisional velocities. Its first four columns provide the values of \alpha, \alpha_0, m_0/m, and \sigma_0/\sigma, while the following two columns contain the simulation results for \langle v_1/v_2 \rangle and \langle v_1 \rangle/\langle v_2 \rangle where v_1 is the velocity before a collision and v_2 is the velocity after the collision.