Positive mass theorems for black holes

Details Positive mass theorems for black holes Positive mass theorems for black holes

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983cmaph..88..295g&link_type=abstract

Communications in Mathematical Physics, Volume 88, Issue 3, pp.295-308

Mathematics

Mathematical Physics

127

Scientific paper

We extend Witten's proof of the positive mass theorem at spacelike infinity to show that the mass is positive for initial data on an asymptotically flat spatial hypersurface Σ which is regular outside an apparent horizon H. In addition, we prove that if a black hole has electromagnetic charge, then the mass is greater than the modulus of the charge. These results are also valid for the Bondi mass at null infinity. Finally, in the case of the Einstein equation with a negative cosmological constant, we show that a suitably defined mass is positive for data on an asymptotically anti-de Sitter surface Σ which is regular outside an apparent horizon.

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