Zobrazeno 1 - 10
of 129
pro vyhledávání: '"J. Ovalle"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 3, Pp 1-11 (2022)
Abstract We present a simple, analytic and straightforward method to elucidate the effects produced by polytropic fluids on any other gravitational source, no matter its nature, for static and spherically symmetric spacetimes. As a direct application
Externí odkaz:
https://doaj.org/article/8b1e8d304c3347b6990d3e4bf8efa5ef
Autor:
J. Ovalle
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 2, Pp 1-5 (2022)
Abstract The belief still persists, at least for an important part of the community, that in general relativity the cosmological constant $$\Lambda $$ Λ must remain immaculate. However, Bianchi identities show that $$\Lambda $$ Λ could acquire loca
Externí odkaz:
https://doaj.org/article/f3058ec3b548488b89d08a5ff8076bf9
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 10, Pp 1-8 (2019)
Abstract We employ the gravitational decoupling approach for static and spherically symmetric systems to develop a simple and powerful method in order to (a) continuously isotropize any anisotropic solution of the Einstein field equations, and (b) ge
Externí odkaz:
https://doaj.org/article/a6cdd5ba9ee14efa9731dd2d587e6736
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 6, Pp 1-9 (2019)
Abstract We employ the minimal geometric deformation approach to gravitational decoupling (MGD-decoupling) in order to build an exact anisotropic version of the Schwarzschild interior solution in a space-time with cosmological constant. Contrary to t
Externí odkaz:
https://doaj.org/article/a01b7d570f06492386731ada57eec6d6
Autor:
J. Ovalle
Publikováno v:
Physics Letters B, Vol 788, Iss , Pp 213-218 (2019)
We show how to decoupling two spherically symmetric and static gravitational sources through the most general possible extension of the so-called Minimal Geometric Deformation-decoupling. As a test, we decouple the Einstein–Maxwell system and repro
Externí odkaz:
https://doaj.org/article/e9683b4d60594a74ba36f3e81da8d319
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 11, Pp 1-11 (2018)
Abstract We investigate how a spherically symmetric fluid modifies the Schwarzschild vacuum solution when there is no exchange of energy-momentum between the fluid and the central source of the Schwarzschild metric. This system is described by means
Externí odkaz:
https://doaj.org/article/133437b5412149af93b8a058906dfdd1
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 2, Pp 1-11 (2018)
Abstract We investigate the extension of isotropic interior solutions for static self-gravitating systems to include the effects of anisotropic spherically symmetric gravitational sources by means of the gravitational decoupling realised via the mini
Externí odkaz:
https://doaj.org/article/d864063a099b464db800c1feed8238fb
Publikováno v:
Advances in High Energy Physics, Vol 2017 (2017)
We review the basic elements of the Minimal Geometric Deformation approach in detail. This method has been successfully used to generate brane-world configurations from general relativistic perfect fluid solutions.
Externí odkaz:
https://doaj.org/article/8e043a5ca4c24ca4937907154f4f4ad6
Publikováno v:
Nature Catalysis. 5:624-632
Autor:
J. Ovalle
In general relativity, nonsingular black holes contain (at least) a Cauchy horizon, a null hypersurface beyond which determinism breaks down. Even though the strong cosmic censorship conjecture establishes the impossibility of extending spacetime bey
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::811996dd188f06fbd2dd95fdff150134