Physical Quantities

The Quantities module contains functions that return physical quantities of interest. Currently, two of them are defined:

• Kinetic energy: The system's kinetic energy is calculated by the function kinetic_energy(state), which takes the system's state as a parameter. Since it depends only on the velocities, it is independent of the chosen dynamic configuration.

• Potential energy: The system's potential energy is calculated by the function potential_energy(system, dynamic_cfg), which takes the system and the dynamic configuration as arguments, since it depends on the chosen interaction between particles. The user should ensure that the correct dispatch for the potential_energy() function is defined for any custom dynamic configuration.

The example print_energy.jl uses these functions.