Note: All correlation functionals in this section can be invoked using the $rem variable CORRELATION. Popular and/or recommended functionals within each class are listed first and indicated in bold. The rest are in alphabetical order.
Local Spin-Density Approximation (LSDA)
Generalized Gradient Approximation (GGA)
PBEloc: PBE correlation functional with a modified beta term by Della Sala and coworkers
Meta-Generalized Gradient Approximation (meta-GGA)
TPSSloc: The TPSS correlation functional with the PBE component replaced by the PBEloc correlation functional