विधियों की तुलना करें

	मोल्लर-प्लेसेट पर्टर्बेशन थ्योरी	युग्मित क्लस्टर CCSD
क्षेत्र	क्वांटम कंप्यूटिंग	क्वांटम कंप्यूटिंग
परिवार	Machine learning	Machine learning
उद्भव वर्ष	1934	1966
प्रवर्तक	Christian Möller and Milton Plesset	Jiri Cizek
प्रकार	Post-Hartree-Fock method	Electronic correlation method
मौलिक स्रोत	Möller, C., Plesset, M. S. (1934). Note on an approximation treatment for many-electron systems. Physical Review, 46, 618–622.	Cizek, J. (1966). On the correlation problem in atomic and molecular systems. Journal of Chemical Physics, 45, 4256–4266.
उपनाम	MP2, MP3, MP4	CCSD, CCSD(T)
संबंधित	3	3
सारांश	Möller-Plesset perturbation theory is a post-Hartree-Fock method that systematically corrects the HF reference by treating electron correlation as a perturbation. Introduced in 1934, MP theory provides increasingly accurate energy estimates (MP2, MP3, MP4, ...) by expanding the correlation energy in orders of perturbation.	Coupled Cluster theory, particularly CCSD (Singles and Doubles) and CCSD(T) with perturbative triples, is one of the most accurate methods for molecular electronic structure. Developed by Jiri Cizek in 1966, CC theory treats the ground state wave function as an exponential of excitation operators applied to the Hartree-Fock reference, enabling systematic treatment of electron correlation with guaranteed size consistency.