Local Time-Dependent Coupled Cluster Response for Properties of Excited States in Large Molecules

Kats, Danylo and Schuetz, Martin (2010) Local Time-Dependent Coupled Cluster Response for Properties of Excited States in Large Molecules. ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 224 (3-4). pp. 601-616. ISSN 0942-9352,

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Abstract

The new, Laplace transform based multi-state local CC2 response method is compared to the previous single-state approach. The new method employs adaptive state specific local approximations for the eigenvectors of the Jacobian. As a result, it is much less dependent on the initial un-truncated CCS wavefunction and able to locate the relevant eigenstates also in difficult cases where the initial CCS eigenvectors are qualitatively wrong and where the original single-state method failed. In this paper we compare excitation energies, transition strengths, and dipole moments of the individual local approaches and the canonical reference calculation, for a set of different molecules and excited states.

Item Type: Article
Uncontrolled Keywords: ELECTRON CORRELATION METHODS; PLESSET PERTURBATION-THEORY; LAPLACE TRANSFORM; AB-INITIO; IDENTITY APPROXIMATION; ENERGY CALCULATIONS; MODEL CC2; MP2; INTEGRALS; RESOLUTION; Local Correlation; Laplace Transform; Response Theory
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Research Group Theoretical Chemistry > Prof. Dr. Martin Schütz
Depositing User: Dr. Gernot Deinzer
Date Deposited: 27 Aug 2020 08:21
Last Modified: 27 Aug 2020 08:21
URI: https://pred.uni-regensburg.de/id/eprint/25642

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