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Vaidya geometries and scalar fields with null gradients
Since, in Einstein gravity, a massless scalar field with lightlike gradient behaves as a null dust, one could expect that it can act as the matter source of Vaidya geometries. We show that this is impossible because the Klein–Gordon equation forces the null geodesic congruence tangent to the scalar...
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| Publicado no: | Eur Phys J C Part Fields |
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| Main Authors: | , , |
| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
Springer Berlin Heidelberg
2021
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC7976656/ https://ncbi.nlm.nih.gov/pubmed/33828412 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1140/epjc/s10052-021-09040-9 |
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