Subject: Relativity: Gaunt vs. Breit in molecules

From: "Vitaly A. Rassolov" <[email-masked]>
Date: Thu, 24 Apr 1997 15:45:47 -0600

Hello everyone,

The leading term in relativistic electron-electron interaction is described
by the Breit Hamiltonian.  It is often stated in the literature that the
Gaunt (magnetic) part of this interaction is more important than the rest
(the effect of retardation).  Is anyone aware of the calculation on
molecular (as opposed to atomic) system that compares these two effects?

	Vitaly Rassolov
	Department of Chemistry		tel. (847) 491-3423
	Northwestern University
	2145 Sheridan Rd.		[email-masked]
	Evanston, IL 60208-3113