MPQC (Massively Parallel Quantum Chemistry) is an ab initio computational chemistry software program. Ab initio quantum chemistry methods are Computational chemistry methods based on Quantum chemistry. Computational chemistry is a branch of Chemistry that uses computers to assist in solving chemical problems Three features distinguish it from other quantum chemistry programs such as GAUSSIAN and GAMESS: it is open source, has an object-oriented design, and is created from the beginning as a parallel processing program. Generally the word Gaussian pertains to Carl Friedrich Gauss and his ideas Open source is a development methodology which offers practical accessibility to a product's source (goods and knowledge Object-oriented programming (OOP is a Programming paradigm that uses " objects " and their interactions to design applications and computer programs Parallel processing is also another term for Parallel computing.
MPQC provides implementations for a number of important methods for calculating electronic structure, including Hartree-Fock, Moller-Plesset perturbation theory (including its explicitly correlated linear R12 versions), and Density Functional Theory. In Computational physics and Computational chemistry, the Hartree-Fock ( HF) method is an approximate method for the determination of the ground-state Møller-Plesset perturbation theory (MP is one of several Quantum chemistry Post-Hartree-Fock ab initio methods in the field of Computational chemistry Density functional theory (DFT is a quantum mechanical theory used in Physics and Chemistry to investigate the Electronic structure (principally