Variational and diffusion Monte Carlo simulations of a hydrogen molecular ion in a spherical box

Xiao Xuehui, Bao Kuo^†, Wang Youchun, Xie Hui, Duan Defang, Tian Fubo, Cui Tian^‡

The ratio of average T_p and T_e versus the pressure. As the pressure increases, T_p/T_e decreases, indicating that the proportion of T_p in the total kinetic energy decreases accordingly.