CCL:G: What is the difference between ab inito and DFT?



 Sent to CCL by: Marcel Swart [m.swart ~ few.vu.nl]
 Hello Fujiyama,
 see any textbook dealing with these things, like (among many others):
 Jensen - Introduction to computational chemistry
 
The basic consensus nowadays is, I think, that people refer to "wavefunction based" methods (RHF, MP2, CCSD(T), QCISD(T), CASSCF, CASPT2, MR-CI) as "ab initio", as opposed to Density Functional Theory (DFT) methods. B3LYP you mention belongs to the DFT methods.
 On Feb 9, 2006, at 8:52 AM, fuji yama yamafuji6__yahoo.com wrote:
 
 Sent to CCL by: "fuji  yama" [yamafuji6__yahoo.com]
 Hello All,
 
Can you please tell me the difference between ab initio and DFT methods? It seems for both the calculations people are using the same basis set and same method (like B3Lyp). Can you please tell me how to do ab initio calculation in g03? Please give me model inputfile, if possible. Thank you very much. Fujiyama.> To recover the email address of the author of the message, please change> Search Messages: http://www.ccl.net/htdig (login: ccl, Password: search)> -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- +-+
 
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