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P. Piecuch and Kinal, A., Is the Mechanism of the [2+2] Cycloaddition of Cyclopentyne to Ethylene Concerted or Biradical? A Completely Renormalized Coupled Cluster Study, The Journal of Physical Chemistry, vol. 110, no. 2, pp. 367-378, 2006.
P. Piecuch, Lodriguito, M. D., Kowalski, K., and Wloch, M., Non-Iterative Coupled- Cluster Methods Employing Multi-Reference Perturbation Theory Wave Functions, Journal of Molecular Structure: THEOCHEM, vol. 771, no. 1-3, pp. 89-104, 2006.
P. Piecuch, Wloch, M., Lodriguito, M., and Gour, J. R., Non-iterative Coupled-Cluster Methods for Excited Electronic States, in Progress in Theoretical Chemistry and Physics, vol. 15, 2006, pp. 45-106.
P. Piecuch, Wloch, M., Gour, J. R., and Kinal, A., Single-reference, size-extensive, non-iterative coupled-cluster approaches to bond breaking and biradicals, Chemical Physics Letters, vol. 418, pp. 467–474, 2006.
C. J. Cramer, Kinal, A., Wloch, M., Piecuch, P., and Gagliardi, L., Theoretical Characterization of End-on and Side-on Peroxide Coordination in Ligated Cu2O2 Models, The Journal of Physical Chemistry A, vol. 110, no. 40, pp. 11557-11568, 2006.
C. J. Cramer, Wloch, M., Piecuch, P., Puzzarini, C., and Gagliardi, L., Theoretical Models on the Cu2O2 Torture Track. Mechanistic Implications for Oxytyrosinase and Small-molecule Analogs, The Journal of Physical Chemistry A, vol. 110, pp. 1991–2004, 2006.
P. Piecuch, Wloch, M., Logriguito, M. D., and Gour, J. R., Two New Classes of Non-Iterative Coupled-Cluster Methods Derived from the Method of Moments of Coupled-Cluster Equations, Molecular Physics, vol. 104, no. 13 & 14, pp. 2149-2172, 2006.
P. - D. Fan and Piecuch, P., The Usefulness of Exponential Wave Function Expansions Employing One- and Two-Body Cluster Operators in Electronic Structure Theory: The Extended and Generalized Coupled-Cluster Methods, Advances in Quantum Chemistry, vol. 51, pp. 1-57, 2006.
Y. Ohtsuka, Piecuch, P., Gour, J. R., Ehara, M., and Nakatsuji, H., Active-Space Symmetry-Adapted-Cluster Configuration-Interaction and Equation-of-Motion Cluster Methods for High Accuracy Calculations of Potential Energy Surfaces of Radicals, The Journal of Chemical Physics, vol. 126, no. 16, p. 28 pages, 2007.
Y. Ge, Gordon, M. S., and Piecuch, P., Breaking Bonds with the Left Eigenstate Completely Renormalized Coupled-Cluster Method, The Journal of Chemical Physics, vol. 127, no. 17, p. 6 pages, 2007.
A. Kinal and Piecuch, P., Computational Investigation of the Conrotatory and Disrotatory Isomerization Channels of Bicyclo[1.1.0]butane to Buta-1,3-diene: A Completely Renormalized Coupled-Cluster Study, Journal of Physical Chemistry A, vol. 111, no. 4, pp. 734-742, 2007.
M. Horoi, Gour, J. R., Wloch, M., Lodriguito, M. D., Brown, B. A., and Piecuch, P., Coupled-Cluster and Configuration-Interaction Calculations for Heavy Nuclei, Physical Review Lettters, vol. 98, no. 11, p. 4 pages, 2007.
G. Hagen, Papenbrock, T., Dean, D. J., Schwenk, A., NHogga, A., Wloch, M., and Piecuch, P., Coupled-Cluster Theory for Three-Body Hamiltonians, Physical Review C, vol. 76, no. 3, p. 11 pages, 2007.
M. Wloch, Gour, J. R., and Piecuch, P., Extension of the Renormalized Coupled-Cluster Methods Exploiting Left Eigenstates of the Similarity-Transformed Hamiltonian to Open- Shell Systems: A Benchmark Study, The Journal of Physical Chemistry A, vol. 111, no. 44, pp. 11359-11382, 2007.
P. Piecuch, Pimienta, I. S. O., Fan, P. - D., and Kowalski, K., New Alternatives for Accurate Electronic Structure Calculations of Potential Energy Surfaces Involving Bond Breaking, in Electron Correlation Methodology, vol. 958, Washington, DC: American Chemical Sociegy, 2007.
P. Piecuch, Wloch, M., and Verandas, A. J. C., Renormalized Coupled-Cluster Methods: Theoretical Foundations and Application to Potential Function of Water, in Progress in Theoretical Chemistry and Physics, vol. 16, no. Part 1, 2007, pp. 63-121.
, Gour, J. R., and Piecuch, P., Ab Initio Coupled-Cluster and Configuration Interaction Calculations for O Using V, Physical Review C, vol. 79, no. 5, 2009.
, Gour, J. R., and Piecuch, P., Center-of-Mass Problem in Truncated Configuration Interaction and Coupled-Cluster Calculations, Physical Letters B, vol. 679, no. 4, pp. 334-339, 2009.
P. Piecuch, Gour, J. R., and Wloch, M., Left-Eigenstate Completely Renormalized Equation-of-motion Coupled-Cluster Methods: Review of Key Concepts, Extension to Excited States of Open-Shell Systems, and Comparison with Electron-Attached and ionized Approaches, International Journal of Quantum Chemistry, vol. 109, no. 14, pp. 3268-3304, 2009.
W. Li, Piecuch, P., Gour, J. R., and Li, S., Local Correlation Calculations Using Standard and Renormalized Coupled-Cluster Approaches, The Journal of Chemical Physics, vol. 131, no. 11, 2009.
M. Ehara, Gour, J. R., and Piecuch, P., Low-Lying Valence Excited States of CNC, C₂N, N₃ and NCO Studied Using the Electron-Attached and Ionized Symmetry-Adapted Cluster Configuration-Interaction and Equation-of-Motion Coupled-Cluster Methodologies, Molecular Physics, vol. 107, no. 8-12, pp. 871-880, 2009.
J. Pittner and Piecuch, P., Method of Moments for the Continuous Transition Between the Brillouin-Wigner-Type and Rayleigh-Schrodinger-Type Multireference Coupled Cluster Theories, Molecular Physics, vol. 107, no. 08-12, pp. 1209-1221, 2009.