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Title: Conical Intersections from Particle–Particle Random Phase and Tamm–Dancoff Approximations

Journal Article · · Journal of Physical Chemistry Letters
 [1];  [1];  [1];  [2]
  1. Duke Univ., Durham, NC (United States). Dept. of Chemistry
  2. Duke Univ., Durham, NC (United States). Dept. of Chemistry, and Dept. of Physics; South China Normal Univ., Guangzhou (China). Key Lab. of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry and Environment

The particle–particle random phase approximation (pp-RPA) and the particle–particle Tamm–Dancoff approximation (pp-TDA) are applied to the challenging conical intersection problem. Because they describe the ground and excited states on the same footing and naturally take into account the interstate interaction, these particle–particle methods, especially the pp-TDA, can correctly predict the dimensionality of the conical intersection seam as well as describe the potential energy surface in the vicinity of conical intersections. Though the bond length of conical intersections is slightly underestimated compared with the complete-active-space self-consistent field (CASSCF) theory, the efficient particle–particle methods are promising for conical intersections and nonadiabatic dynamics.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for the Computational Design of Functional Layered Materials (CCDM)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Institutes of Health (NIH)
Grant/Contract Number:
SC0012575
OSTI ID:
1387977
Journal Information:
Journal of Physical Chemistry Letters, Vol. 7, Issue 13; Related Information: CCDM partners with Temple University (lead); Brookhaven National Laboratory; Drexel University; Duke University; North Carolina State University; Northeastern University; Princeton University; Rice University; University of Pennsylvania; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

References (22)

Conical Intersections:  The New Conventional Wisdom journal July 2001
BEYOND BORN-OPPENHEIMER: Molecular Dynamics Through a Conical Intersection journal June 2004
Conical intersections and double excitations in time-dependent density functional theory journal March 2006
Configuration Interaction-Corrected Tamm–Dancoff Approximation: A Time-Dependent Density Functional Method with the Correct Dimensionality of Conical Intersections journal January 2014
Configuration interaction based on constrained density functional theory: A multireference method journal October 2007
Communication: Conical intersections using constrained density functional theory–configuration interaction journal August 2010
Assessment of Density Functional Theory for Describing the Correlation Effects on the Ground and Excited State Potential Energy Surfaces of a Retinal Chromophore Model journal August 2013
Shape of Multireference, Equation-of-Motion Coupled-Cluster, and Density Functional Theory Potential Energy Surfaces at a Conical Intersection journal June 2014
The spin–flip approach within time-dependent density functional theory: Theory and applications to diradicals journal March 2003
Time-dependent density functional theory based on a noncollinear formulation of the exchange-correlation potential journal January 2004
Optimizing Conical Intersections by Spin−Flip Density Functional Theory: Application to Ethylene journal November 2009
Exchange-correlation energy from pairing matrix fluctuation and the particle-particle random-phase approximation journal September 2013
Double, Rydberg and charge transfer excitations from pairing matrix fluctuation and particle-particle random phase approximation journal December 2013
Linear-response time-dependent density-functional theory with pairing fields journal May 2014
Analytic gradients, geometry optimization and excited state potential energy surfaces from the particle-particle random phase approximation journal January 2015
Excitation energies from particle-particle random phase approximation: Davidson algorithm and benchmark studies journal September 2014
Structure Optimizations for Excited States with Correlated Second-Order Methods: CC2 and ADC(2) book January 2005
Can coupled-cluster theory treat conical intersections? journal July 2007
Accurate atomic quantum defects from particle–particle random phase approximation journal November 2015
Exploring molecular complexity: Conical intersections and NH3 photodissociation journal July 2004
Direct calculation of coupled diabatic potential-energy surfaces for ammonia and mapping of a four-dimensional conical intersection seam journal March 2006
Improved direct diabatization and coupled potential energy surfaces for the photodissociation of ammonia journal March 2007

Cited By (2)

Locality of conical intersections in semiconductor nanomaterials journal January 2019
Charge transfer excitations from particle-particle random phase approximation—Opportunities and challenges arising from two-electron deficient systems journal March 2017