Matches in SemOpenAlex for { <https://semopenalex.org/work/W3206474951> ?p ?o ?g. }
- W3206474951 abstract "Spontaneous scalarization is a mechanism that allows a scalar field to go undetected in weak gravity environments and yet develop a nontrivial configuration in strongly gravitating systems. At the perturbative level it manifests as a tachyonic instability around spacetimes that solve Einstein's equations. The end-point of this instability is a nontrivial scalar field configurationthat can significantly modify a compact object's structure and can produce observational signatures of the scalar field's presence. Does such a mechanism exists for vector fields? Here we revisit the model that constitutes the most straightforward generalization of the original scalarization model to a vector field and perform a perturbative analysis. We show that a ghost appears as soon as the square of the naive effective mass squared becomes negative anywhere. This result poses a serious obstacle in generalizing spontaneous scalarization to vector fields." @default.
- W3206474951 created "2021-10-25" @default.
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- W3206474951 date "2021-10-09" @default.
- W3206474951 modified "2023-09-28" @default.
- W3206474951 title "The ghost of vector fields in compact stars." @default.
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