SEARCH Articles Figures Tables Adiabatic approximation bending energies Approximate Energy Unit Conversion Factors Approximate Free Energy Calculations Approximate energies of electronic states Approximate free energy simulations Approximate theoretical energies Approximation for the Valence Energy Approximation methods second-order energy) Approximation to the Energy-Transfer Cross-Section Approximations that further simplify the energy equation Atomic orbitals approximate relative energies Atomic shell approximation kinetic energy Average excitation energy approximation Born-Oppenheimer approximation, molecular potential energy Born-Oppenheimer approximation, potential energy surfaces By Yehuda Haas and Shmuel Zilberg The Crude Born-Oppenheimer Adiabatic Approximation of Molecular Potential Energies Correlation energy approximations Coupled Electron Pair Approximation potential energy surfaces Crude Born-Oppenheimer approximation potential energy surface Definitions and Approximations Associated with Different Types of Potential Energy Curves Electronic energies computation approximate Empirical model, approximating free energy Energy Born-Oppenheimer approximation Energy Profile and Rate Law of SN1 Reactions Steady State Approximation Energy approximate molecular step Energy bands approximation Energy bands in the free-electron approximation symmorphic space groups Energy bands independent-electron approximation Energy calculations cutoff approximation Energy distribution functions condensation approximation Energy from an Approximate Wave Function Energy levels approximate Energy matrices Born-Oppenheimer approximation Energy quadratic approximation Energy sudden approximation Energy-band structure approximation Exchange energy free-electron approximation Exchange-correlation energy approximation Exchange-correlation energy approximation definition Exchange-correlation energy generalized gradient approximation Exchange-correlation energy random phase approximation Extended Hartree-Fock approximate correlation energy Free energy approximation Free energy calculations rapid methods, approximate Frozen-orbital approximation excitation energies Generalized gradient approximation energy Gibbs free energy approximation Gibbs free standard energy approximation Harmonic approximation, potential energy Harmonic approximation, potential energy thermodynamics Hartree-Fock approximation activation energies Hartree-Fock approximation electronic energy Hartree-Fock approximation energy eigenvalue Hartree-Fock approximation ground state energy Hartree-Fock approximation perturbed energy Hartree-Fock approximation potential energy surfaces Hartree-Fock approximation self energy Helmholtz Free Energy from the CS Approximation High energy approximation Intramolecular vibrational energy redistribution approximations Kinetic energy operator Born-Oppenheimer approximation Local density approximation energy models Local density approximation exchange-correlation energy Potential energy Born-Oppenheimer approximation Potential energy surfaces statistical approximation Rapid free energy calculations, approximate Relaxation energy, harmonic approximation Reorganization energy Marcus approximation Self-energy approximations Semi-classical approximation, free energy Statistical approximations, potential energy The Born-Oppenheimer Approximation Potential Energy Surfaces Total Energies in the Local Density Approximation Two-Point Approximate Orbital-Free Kinetic Energy Functionals Vibrational energy relaxation approximations Zero-point energy approximation Zeroth-order regular approximation energies/results