Abstract
A new scheme with extended model space is proposed to improve the calculation of multi-reference second order perturbation theory (MRPT2). The new scheme preserves the concise code structure of the original program, and avoids intruder states in constructions of the potential energy surface, which is confirmed by a series of comparable calculations. The new MRPT2 program is an available tool for the research of molecular excited states and electronic spectrum.
Similar content being viewed by others
References
Andersson K, Malmqvist PA, Roos BO, Sadlej AJ, Wolinski K. Second-order perturbation-theory with a CASSCF reference function. J Phys Chem, 1990, 94: 5483–5488
Andersson K, Malmqvist PA, Roos BO. 2nd-order perturbation-theory with a complete active space self-consistent field reference function. J Chem Phys, 1992, 96: 1218–1226
Hirao K. Multireference Moller-Plesset perturbation-theory for high-spin open-shell systems. Chem Phys Lett, 1992, 196: 397–403
Hirao K. Multireference Moller-Plesset method. Chem Phys Lett, 1992, 190: 374–380
Hirao K. State-specific multireference Moller-Plesset perturbation treatment for singlet and triplet excited-states, ionized states and electron attached states of H2O. Chem Phys Lett, 1993, 201: 59–66
Kozlowski PM, Davidson ER. Considerations in constructing a multireference 2nd-order perturbation-theory. J Chem Phys, 1994, 100: 3672–3682
Davidson ER. Construction of open-shell perturbation-theory. Chem Phys Lett, 1995, 241: 432–437
Andersson K. Different forms of the zeroth-order Hamiltonian in secondorder perturbation theory with a complete active space self-consistent field reference function. Theoret Chim Acta, 1995, 91: 31–46
Dyall KG. The Choice of a zeroth-order Hamiltonian for 2nd-order perturbation-theory with a complete active space self-consistent-field reference function. J Chem Phys, 1995, 102: 4909–4918
Cimiraglia R. Many-body multireference Moller-Plesset and Epstein-Nesbet perturbation theory: Fast evaluation of second-order energy contributions. Int J Quantum Chem, 1996, 60: 167–171
Forsberg N, Malmqvist PA. Multiconfiguration perturbation theory with imaginary level shift. Chem Phys Lett, 1997, 274: 196–204
Finley JP. Diagrammatic complete active space perturbation theory. J Chem Phys, 1998, 108: 1081–1088
Wenzel W, Steiner MM. Brillouin-Wigner based multi-reference perturbation theory for electronic correlation effects. J Chem Phys, 1998, 108: 4714–4724
Fores M, Adamowicz L. A CASSCF-CASPT2 study of the excited-state intramolecular proton transfer reaction in 1-amino-3-propenal using different active spaces. J Comput Chem, 1999, 20: 1422–1431
Wang YB, Gan ZT, Su KH, Wen ZY. Configuration-based multireference second order perturbation theory. Sci China Ser B-Chem, 2000,43: 567–575
Choe YK, Witek HA, Finley JP, Hirao K. Identifying and removing intruder states in multireference Moller-Plesset perturbation theory. J Chem Phys, 2001, 114: 3913–3918
Witek HA, Choe YK, Finley JP, Hirao K. Intruder state avoidance multireference Moller-Plesset perturbation theory. J Comput Chem, 2002, 23: 957–965
Ghigo G, Roos BO, Malmqvist PA. A modified definition of the zeroth-order Hamiltonian in multiconfigurational perturbation theory (CASPT2). Chem Phys Lett, 2004, 396: 142–149
Li AY, Suo B, Wen ZY, Wang YB. Potential energy surfaces for low-lying electronic states of SO2. Sci China Ser B-Chem, 2006, 49: 289–295
Peng Q, Wang YB, Suo B, Shi QZ, Wen ZY. On the interconversion pathway of HBO 〈−〉 BOH. J Chem Phys, 2004, 121: 778–782
Han HX, Suo BB, Jiang ZY, Wang YB, Wen ZY. The potential energy curves of low-lying electronic states of S2O. J Chem Phys, 2008, 128: 184312
Lei YB, Suo BB, Li AY, Dou YS, Wang YB, Wen ZY. Involvement of excited triplet state in the photodissociation of cyclobutane. Int J Quantum Chem, 2008, 108: 788–796
Epstein PS. The stark effect from the point of view of Schroedinger’s quantum theory. Phys Rev, 1926, 28: 0695–0
Nesbet RK. Configuration interaction in orbital theories. Proc Roy Soc Lond Math Phys Sci, 1955, 230: 312–321
Wang YB, Zhai GH, Suo BB, Gan ZT, Wen ZY. Hole-particle correspondence in CI calculations. Chem Phys Lett, 2003, 375: 134–140
Lowdin PO. Studies in perturbation theory 4. Solution of eigenvalue problem by projection operator formalism. J Math Phys, 1962, 3: 969–982
Shavitt I. The Ak and Bk approximate CI methods — comment. Chem Phys Lett, 1992, 192: 135–137
Karlstrom G, Lindh R, Malmqvist PA, Roos BO, Ryde U, Veryazov V, Widmark PO, Cossi M, Schimmelpfennig B, Neogrady P, Seijo L. MOLCAS: a program package for computational chemistry. Comput Mater Sci, 2003, 28: 222–239
Werner HJ, Knowles PJ, Lindh R, Manby FR, Schütz M, Celani P, Korona T, Mitrushenkov A, Rauhut G, Adler TB, Amos RD, Bernhardsson A, Berning A, Cooper DL, Deegan MJO, Dobbyn AJ, Eckert F, Goll E, Hampel C, Hetzer G, Hrenar T, Knizia G, Köppl C, Liu Y, Lloyd AW, Mata RA, May AJ, McNicholas SJ, Meyer W, Mura ME, Nicklaß A, Palmieri P, Pflüger K, Pitzer R, Reiher M, Schumann U, Stoll H, Stone AJ, Tarroni R, Thorsteinsson T, Wang M, Wolf A. MOLPRO, version 2006.1, a package of ab initio programs designed
Dou YS, Allen RE. Dynamics of the photocyclization of cis-stilbene to dihydrophenanthrene. J Mod Optics, 2004, 50: 2485–2491
Kuthirummal N, Rudakov FM, Evans CL, Weber PM. Spectroscopy and femtosecond dynamics of the ring opening reaction of 1,3-cyclohexadiene. J Chem Phys, 2006, 125: 133307
Huron B, Malrieu JP, Rancured P. Interative perturbation calculations of ground and excited state energies from multiconfigurational zeroth-order wavefunctions. J Chem Phys, 1973, 58:5745–5759
Szabados A, Rolik Z, Tóth G, Surján PR. Multiconfiguration perturbation theory: Size consistency at second order. J Chem Phys, 2005, 122: 114104–114116
Fink R. A size-consistent, unitary invariant, and rapidly convergent wavefunction based on ab initio approach. Chem Phys, 2009, 356: 39–46
Sherrill CD, Piecuch P. A comparison of renormalized coupled-cluster and multi-reference methods with full configuration interaction benchmarks. J Chem Phys, 2005, 122: 1241041–12411058
Li AY, Wang YB, Dou YS, Wen ZY. Potential energy curves for X 1Δ +g , B 1Δg, and B 1Δ +g states of C2 using MRCI and approximate CI methods. Sci China Ser B-Chem, 2007, 50: 614–619
Chen F, Davidson ER, Iwata S. New time-independent perturbation theory for the multireference problem. Int J Quant Chem, 2002, 86: 256–264
Angeli C, Bories B, Cavallini A, Cimiraglia R. Third-order multireference perturbation theory: The n-electron valence state perturbation-theory approach. J Chem Phys, 2006, 124: 054108
Author information
Authors and Affiliations
Corresponding author
Additional information
Supported by the National High Technical Development Project (863 project) Foundation (Grant No. 2006AA01A119), the National Natural Science Foundation of China (Grant No. 20773168) and the Natural Science Foundation of CQUPT (A2008-36).
Rights and permissions
About this article
Cite this article
Li, A., Han, H., Suo, B. et al. A modified multi-reference second order perturbation theory. Sci. China Chem. 53, 933–939 (2010). https://doi.org/10.1007/s11426-009-0270-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11426-009-0270-1