School Seminars and Colloquia

Mass definition under minimal conditions


by Professor Robert Bartnik

Institution: Monash University
Date: Wed 25th May 2005
Time: 11:00 AM
Location: Russell Love Theatre, Richard Berry Building, The University of Melbourne

Abstract: Definitions of total mass for an isolated gravitating system
depend on delicate asymptotic behaviour of the spacetime metric. It is
important to understand how robust are these conditions -- ie. to find
weaker conditions under which the mass is still well defined. This talk
will describe recent results of mine which significantly generalise mass
definitions at future null infinity (Trautman-Bondi mass) and at spacelike
infinity (ADM mass). These results have interesting implications for
Hamiltonian formulations of the Einstein equations and for cosmic

For More Information: Paul Norbury tel: 8344-5534 email:; Ole Warnaar tel: 8344-5214 email:

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