Boundary sources in the Doran-Lobo-Crawford spacetime

• Authors: Hristu Culetu
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

causal horizon; boundary stress tensor; null geodesic; anisotropic fluid; extrinsic curvature

Discipline

• 04.90.+e: Other topics in general relativity and gravitation (restricted to new topics in section 04)

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2008
• Volume: 6
• Issue: 2
• Pages: 317-320

Dates

published

1 - 6 - 2008

online

26 - 3 - 2008

Contributors

author

Hristu Culetu

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

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Identifiers

DOI

10.2478/s11534-008-0010-8