Comment on "Failure of standard conservation laws at a classical change of signature"

Details Comment on "Failure of standard conservation laws at a classical change of signature" Comment on "Failure of standard conservation laws at a classical change of signature"

1996-06-17

arxiv.org/abs/gr-qc/9606045v1

Phys.Rev. D52 (1995) 7331

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

3 pages, TeX

Scientific paper

10.1103/PhysRevD.52.7331

Hellaby & Dray (gr-qc/9404001) have recently claimed that matter conservation fails under a change of signature, compounding earlier claims that the standard junction conditions for signature change are unnecessary. In fact, if the field equations are satisfied, then the junction conditions and the conservation equations are satisfied. The failure is rather that the authors did not make sense of the field equations and conservation equations, which are singular at a change of signature.

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