Departures from the Friedmann-Lemaitre-Robertston-Walker Cosmological Model in an Inhomogeneous Universe: A Numerical Examination.
Phys Rev Lett
; 116(25): 251301, 2016 Jun 24.
Article
en En
| MEDLINE
| ID: mdl-27391710
ABSTRACT
While the use of numerical general relativity for modeling astrophysical phenomena and compact objects is commonplace, the application to cosmological scenarios is only just beginning. Here, we examine the expansion of a spacetime using the Baumgarte-Shapiro-Shibata-Nakamura formalism of numerical relativity in synchronous gauge. This work represents the first numerical cosmological study that is fully relativistic, nonlinear, and without symmetry. The universe that emerges exhibits an average Friedmann-Lemaître-Robertson-Walker (FLRW) behavior; however, this universe also exhibits locally inhomogeneous expansion beyond that expected in linear perturbation theory around a FLRW background.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2016
Tipo del documento:
Article
País de afiliación:
Estados Unidos