2021
DOI: 10.3390/universe7120477
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Nontrivial Isometric Embeddings for Flat Spaces

Abstract: Nontrivial isometric embeddings for flat metrics (i.e., those which are not just planes in the ambient space) can serve as useful tools in the description of gravity in the embedding gravity approach. Such embeddings can additionally be required to have the same symmetry as the metric. On the other hand, it is possible to require the embedding to be unfolded so that the surface in the ambient space would occupy the subspace of the maximum possible dimension. In the weak gravitational field limit, such a requir… Show more

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Cited by 4 publications
(3 citation statements)
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“…Therefore, bI ij can be represented as a 6 × 6 matrix. Since this matrix is nonsingular for "unfolded" embeddings (see details in [18]), you can introduce symmetric by l, m and transverse by I value ᾱlm I , which is inverse to bI ij in the matrix sense:…”
Section: Linearization Of Regge-teitelboim Equationsmentioning
confidence: 99%
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“…Therefore, bI ij can be represented as a 6 × 6 matrix. Since this matrix is nonsingular for "unfolded" embeddings (see details in [18]), you can introduce symmetric by l, m and transverse by I value ᾱlm I , which is inverse to bI ij in the matrix sense:…”
Section: Linearization Of Regge-teitelboim Equationsmentioning
confidence: 99%
“…Let us present an embedding ȳI (x i ) of the flat Euclidean 3D metric into 9D Euclidean space that would be spherically symmetric in the sense discussed in [20] and would also be unfolded in terms of [18]. The latter means that, for such a surface, the second fundamental form (7) is nonsingular as a 6 × 6 matrix; see the text after (7).…”
Section: Explicit Unfolded Spherically Symmetric Embeddingmentioning
confidence: 99%
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