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dc.contributor.author
Combi, Luciano
dc.contributor.author
Romero, Gustavo Esteban
dc.date.available
2021-03-04T17:18:18Z
dc.date.issued
2020-09
dc.identifier.citation
Combi, Luciano; Romero, Gustavo Esteban; Relativistic rigid systems and the cosmic expansion; Springer/Plenum Publishers; General Relativity And Gravitation; 52; 9; 9-2020; 1-20
dc.identifier.issn
0001-7701
dc.identifier.uri
http://hdl.handle.net/11336/127468
dc.description.abstract
We analyze the necessary conditions for a body to remain rigid in an expanding cosmological Universe. First, we establish the main theorems and definitions for having a rigid body in a general spacetime as well as the new concept of quasilocal rigidity. We apply the obtained results to a homogeneous universe exploring the differences with flat spacetime. We discuss how the concept of rigid body helps to understand the expansion of space in cosmology. Finally, using a rigid system as a reference frame, we calculate the gravitational energy, and we compare it with previous results in the literature.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer/Plenum Publishers
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
COSMOLOGY
dc.subject
EXPANSION
dc.subject
GRAVITATIONAL ENERGY
dc.subject
RIGIDITY
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Relativistic rigid systems and the cosmic expansion
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-01-18T15:43:24Z
dc.journal.volume
52
dc.journal.number
9
dc.journal.pagination
1-20
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Combi, Luciano. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
dc.description.fil
Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
dc.journal.title
General Relativity And Gravitation
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10714-020-02744-5
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10714-020-02744-5
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/pdf/2008.11836.pdf
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