A comment on positive mass for scalar field sources
arXiv:1105.6200 · doi:10.1007/s10714-011-1165-y
Abstract
We use a transformation due to Bekenstein to relate the ADM and Bondi masses of asymptotically-flat solutions of the Einstein equations with, respectively, scalar sources and conformal-scalar sources. Although the conformal-scalar energy-momentum tensor does not satisfy the Dominant Energy Condition one may, by this means, still conclude that the ADM mass is positive.
6 pages