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The Journal of Chemical Physics|September 13, 2006
A size extensive energy functional derived from a double configuration interaction approach: the role of N representability conditionsChristian KollmarThe Journal of Chemical Physics|January 7, 2005
The "JK-only" approximation in density matrix functional and wave function theoryChristian KollmarThe Journal of Chemical Physics|August 17, 2011
The relationship between double excitation amplitudes and Z vector components in some post-Hartree-Fock correlation methodsChristian Kollmar, Frank NeeseThe Journal of Chemical Physics|October 10, 2014
The static response function in Kohn-Sham theory: an appropriate basis for its matrix representation in case of finite AO basis setsChristian Kollmar, Frank NeeseThe Journal of Chemical Physics|September 8, 2011
An orbital-invariant and strictly size extensive post-Hartree-Fock correlation functionalChristian Kollmar, Frank NeeseThe Journal of Chemical Physics|September 25, 2007
Optimized effective potential method: is it possible to obtain an accurate representation of the response function for finite orbital basis sets?Christian Kollmar, Michael FilatovThe Journal of Chemical Physics|February 20, 2008
The role of orbital products in the optimized effective potential methodChristian Kollmar, Michael FilatovThe Journal of Chemical Physics|July 23, 2004
The structure of the second-order reduced density matrix in density matrix functional theory and its construction from formal criteriaChristian Kollmar, Bernd A HessThe Journal of Chemical Physics|June 8, 2020
An alternative choice of the zeroth-order Hamiltonian in CASPT2 theoryChristian Kollmar, Kantharuban Sivalingam, Frank NeeseJournal of Computational Chemistry|June 18, 2005
Optimization of auxiliary basis sets for the LEDO expansion and a projection technique for LEDO-DFTAndreas W Götz, Christian Kollmar, Bernd A HessPageof 2