Boundary sources in the Doran-Lobo-Crawford spacetime

Hristu Culetu 1
  • 1 Department of Physics B-dul Mamaia 124, Ovidius University, 8700, Constanta, Romania


We take a null hypersurface (causal horizon) generated by a congruence of null geodesics as the boundary of the Doran-Lobo-Crawford spacetime to be the place where the Brown-York quasilocal energy is located. The components of the outer and inner stress tensors are computed and shown to depend on time and on the impact parameter b of the test-particle trajectory. The spacetime is a solution of Einstein’s equations with an anisotropic fluid as source. The surface energy density σ on the boundary is given by the same expression as that obtained previously for the energy stored on a Rindler horizon. For time intervals long compared to b (when the stretched horizon tends to the causal one), the components of the stress tensors become constant.

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Open Physics (former Central European Journal of Physics) is a peer-reviewed Open Access journal, devoted to the publication of fundamental research results in all fields of physics.