{"meta_name":"atom_forces","meta_type":"type-value","meta_description":["Forces acting on the atoms, calculated as minus gradient of energy_total, ","**including** constraints, if present. The derivatives with respect to ","displacements of nuclei are evaluated in Cartesian coordinates. In addition, ","these forces are obtained by filtering out the unitary transformations ","(center-of-mass translations and rigid rotations for non-periodic systems, see ","atom_forces_free_raw for the unfiltered counterpart). Forces due to constraints ","such as fixed atoms, distances, angles, dihedrals, etc. are included (see ","atom_forces_raw for the unfiltered counterpart)."],"meta_parent_section":"section_single_configuration_calculation","meta_abstract_types":["atom_forces_type"],"meta_data_type":"float","meta_dimension":[{"meta_dimension_symbolic":"number_of_atoms"},{"meta_dimension_fixed":3}],"meta_repeats":true,"meta_units":"N"}