Abstract
PAICS is an open-source software available for fragment molecular orbital (FMO) calculation. A notable characteristic of PAICS is the capability to use the resolution of the identity (RI) approximation with the FMO scheme. Second-order Møller–Plesset perturbation theory with the RI approximation (RI-MP2) was implemented in PAICS, demonstrating that electron correlation energy of biomolecules could be efficiently calculated. Recently, third-order Møller–Plesset perturbation theory with the RI approximation (RI-MP3) was implemented, which enables us to calculate higher order electron correlation energy of biomolecules in a reasonable computational time. This chapter introduces the development of PAICS, by focusing on the FMO-RI-MP2 and MP3.
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Ishikawa, T. (2021). PAICS: Development of an Open-Source Software of Fragment Molecular Orbital Method for Biomolecule. In: Mochizuki, Y., Tanaka, S., Fukuzawa, K. (eds) Recent Advances of the Fragment Molecular Orbital Method. Springer, Singapore. https://doi.org/10.1007/978-981-15-9235-5_5
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DOI: https://doi.org/10.1007/978-981-15-9235-5_5
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