GR Math Seminar: "The graded Lie algebra of general relativity "

Wed, 04/08/2015 - 14:00
Michael Reiterer (IAS and Penn)

Several problems can be written as [x,x]=0 where the unknown x
is an element of degree one in a graded Lie algebra. I show that general
relativity (the Einstein vacuum equations) can also be put in this form.
Using this language, I discuss formal perturbation theory; gauge-fixing;
and some open problems. Familiarity with general relativity is not
assumed, in fact this talk can be taken to be some kind of introduction
to general relativity. Based on Joint work with
Eugene Trubowitz.