Quasilocal energy in modified gravity
arXiv:1508.06849 · doi:10.1088/0264-9381/33/1/015007
Abstract
A new generalization of the Hawking-Hayward quasilocal energy to scalar-tensor gravity is proposed without assuming symmetries, asymptotic flatness, or special spacetime metrics. The procedure followed is simple but powerful and consists of writing the scalar-tensor field equations as effective Einstein equations and then applying the standard definition of quasilocal mass.
Corrected an error and added a section on Einstein frame. Matches version published in Class. Quantum Grav