MM vs MD



Dear Prof. Telkuni Tsuru and other Netters,
 I am working with quantum mechanical Hartree-Fock and Density Functional
 Methods. Would you be so kind and explane me more detail what it is the
 difference between methods:
 1) MM, describing with force fields and bonding parameters and
 2) MD, describing with potential functions ?
 Which is more exact in comparison with quantum mechanical methods?
 Thanking you in advance.
 Best regards, Arvydas Tamulis
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                   Arvydas Tamulis
 Doctor of Natural Sciences, senior research fellow
 Institute of Theoretical Physics and Astronomy, Vilnius University,
 Theoretical Molecular Electronics and Spintronics Research Group,
 A. Gostauto 12, Vilnius 2600, Lithuania
 e-mails: tamulis~at~itpa.lt  or  arvydas_tamulis~at~yahoo.com
 WEBsite: http://www.itpa.lt/~tamulis/
 fax: +370-5-2125361
 Phones: +370-5-2625036  or  +370-5-2620861
 Home address: Didlaukio 27-40, Vilnius 2057, Lithuania
 Mobile phone: +370-69919397
 *******************************************************************
 On Sat, 29 Nov 2003, Telkuni wrote:
 > Hello, CCLers.
 >
 > Although I think it is very basic knowledge, I want to know the truth.
 >
 > Some papers and books treat AMBER as Molecular Mechanic method
 > describing with force fields and bonding parameters. But others treat
 > AMBER as Molecular Dynamic method describing with potential functions.
 >
 > Does AMBER belong MM or MD? and or both of them?
 >
 > >...All responses, I will appreciate. And I will summarize them.
 >
 >
 >
 >  Sincerely yours,
 > ----------------------------------------------------
 >       Telkuni Tsuru     telkuni~at~venus.dti.ne.jp
 >
 >
 >
 >
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