Temperature measurements in particle simulations must account for the reduction in degrees of freedom (DoF) due to constraints. However, when local temperature is measured, e.g. from a set of particles in a subvolume or from velocities projected onto one Cartesian direction, the result can appear to unphysically violate equipartition if the local DoF are not correctly calculated. Here we provide a self-consistent method for calculating the DoF for an arbitrary local kinetic temperature measurement.
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Sanderson et al. (2024) studied this question.
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