HCH
Half core hole
HHG
High harmonic generation
IR
Infrared
LCM
Linear coupling model
LFT
Ligand field theory
MCSCF
Multiconfigurational self-consistent field
MLFT
Multiplet ligand field theory
MMUT
Modified midpoint unitary transform
MO
Molecular orbital
MOM
Maximum overlap method
MRCC
Multireference coupled cluster
MRCI
Multireference configuration interaction
MRPT
Multireference perturbation theory
NEO
Norm-extended optimization
NMA
N-methylacetamide
NR
Newton–Raphson
NTO
Natural transition orbital
OEP
Optimal effective potential
PAD
Photoelectron angular distribution
PES
Potential energy surface
RAS
Restricted active space
RASPT2
Restricted active space second-order perturbation theory
RASSCF
Restricted active space self-consistent field
RASSI
Restricted active space state interaction
REW
Restricted excitation window
RIXS
Resonant inelastic X-ray scattering
ROCIS
Restricted open-shell configuration interaction singles
ROHF
Restricted open-shell Hartree–Fock
RT
Real-time
SA
State-averaged
SAC-CI
Symmetry-adapted cluster configuration interaction
SCF
Self-consistent field
SF
Spin-flip
SIC
Self-interaction correction
SLE
Stochastic Liouville equation
SO
Spin-orbit
SOS
Sum over state
SS-MRCC State-specific multireference coupled cluster
STEX
Static exchange
SXRS
Stimulated X-ray Raman spectroscopy
TDA
Tamm–Dancoff approximation
TDDFT
Time-dependent density functional theory
TDHF
Time-dependent Hartree–Fock
TDM
Transition dipole moments
TP
Transition potential
TRPES
Time-resolved photoelectron spectroscopy
Nonlinear Spectroscopy of Core and Valence Excitations Using Short X-Ray. . .
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