Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Filipe C. Mena"'
Autor:
Rodrigo D.B. Fontana, Filipe C. Mena
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 10, Pp 1-27 (2022)
Abstract We investigate the numerical stability of accelerating AdS black holes against linear scalar perturbations. In particular, we study the evolution of a probe non-minimally coupled scalar field on Schwarzschild and Reissner-Nordström AdS blac
Externí odkaz:
https://doaj.org/article/5b4a134c854c42bd8cb7106abd1b689c
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-22 (2019)
Abstract The strong cosmic censorship hypothesis has recently regained a lot of attention in charged and rotating black holes immersed in de Sitter space. Although the picture seems to be clearly leaning towards the validity of the hypothesis in Kerr
Externí odkaz:
https://doaj.org/article/66c0e372356c4d38816d52db90b6a9d0
Autor:
Viktor G. Czinner, Filipe C. Mena
Publikováno v:
Physics Letters B, Vol 758, Iss C, Pp 9-13 (2016)
The necessary information to distinguish a local inhomogeneous mass density field from its spatial average on a compact domain of the universe can be measured by relative information entropy. The Kullback–Leibler (KL) formula arises very naturally
Externí odkaz:
https://doaj.org/article/ed9d986c6ca8452a93088aa879acff81
Publikováno v:
General Relativity and Gravitation. 54
The existence of magnetic fields in the universe is unmistakable. They are observed at all scales from stars to galaxy clusters. However, the origin of these fields remains enigmatic. It is believed that magnetic field seeds may have emerged from inf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::207b025b9bc59b29c24241d55d0da575
https://doi.org/10.1007/s10714-022-02968-7
https://doi.org/10.1007/s10714-022-02968-7
Black holes found in binaries move at very high velocities relative to our own reference frame and can accelerate due to the emission of gravitational radiation. Here, we investigate the numerical stability and late-time behavior of linear scalar per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc69225256f6c85ffbb2acbc9857adec
http://arxiv.org/abs/2005.03028
http://arxiv.org/abs/2005.03028
Autor:
João L. Costa, Filipe C. Mena
We consider a characteristic initial value problem, with initial data given on a future null cone, for the Einstein (massless) scalar field system with a positive cosmological constant, in Bondi coordinates. We prove that, for small data, this system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::121024c07a19630006a1adf2c03bde8d
http://arxiv.org/abs/2004.07396
http://arxiv.org/abs/2004.07396
Autor:
Filipe C. Mena
Publikováno v:
Advances in Mathematical Physics, Vol 2012 (2012)
We review recent results about the modelling of gravitational collapse to black holes in higher dimensions. The models are constructed through the junction of two exact solutions of the Einstein field equations: an interior collapsing fluid solution
Externí odkaz:
https://doaj.org/article/3459f621dae347109edb8863c31b3ad7
We apply a new global dynamical systems formulation to flat Robertson-Walker cosmologies with a massless and massive Yang-Mills field and a perfect-fluid with linear equation of state as the matter sources. This allows us to give proofs concerning th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b0a63c8a658faf83f69fa4638fb334c
http://arxiv.org/abs/1910.04678
http://arxiv.org/abs/1910.04678
Autor:
Paulo Luz, Filipe C. Mena
We extend the scope of the Raychaudhuri-Komar singularity theorem of General Relativity to affine theories of gravity with and without torsion. We first generalize the existing focusing theorems using time-like and null congruences of curves which ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::438230702798b0f554882696a4cccdb2
http://arxiv.org/abs/1909.00018
http://arxiv.org/abs/1909.00018
Autor:
Filipe C. Mena, Alfonso García-Parrado
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Using the Sparling form and a geometric construction adapted to spacetimes with a 2-dimensional isometry group, we analyse a quasi-local measure of gravitational energy. We then study the gravitational radiation through spacetime junctions in cylindr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93ab630a96e67b14605eb2704b48f6e4