Zobrazeno 1 - 10
of 240
pro vyhledávání: '"Senovilla, José M. M."'
We present the algebraic classification of the gravitational field in four-dimensional general metric-affine geometries, thus extending the current results of the literature in the particular framework of Weyl-Cartan geometry by the presence of the t
Externí odkaz:
http://arxiv.org/abs/2409.07153
The criterion for existence of gravitational radiation at conformal infinity in the presence of a positive cosmological constant is applied to a general family of exact solutions representing generic (pairs of) black holes of algebraic type D. Our an
Externí odkaz:
http://arxiv.org/abs/2407.14863
Autor:
Senovilla, José M. M.
Semi-Riemannian manifolds that satisfy (homogeneous) linear differential conditions of arbitrary order on the curvature are analyzed. They include, in particular, the spaces with (higher-order) recurrent curvature, (higher-order) symmetric spaces, as
Externí odkaz:
http://arxiv.org/abs/2308.15436
Autor:
Senovilla, José M M
It has been long known that in spacetimes with a positive cosmological constant $\Lambda >0$ the area of spatially stable marginally trapped surfaces (MTSs) has a finite upper bound given by $4\pi/\Lambda$. In this paper I show that any such spacetim
Externí odkaz:
http://arxiv.org/abs/2301.05913
Autor:
Senovilla, José M. M.
A positive cosmological constant $\Lambda >0$ sets an upper limit for the area of marginally future-trapped surfaces enclosing a black hole (BH). Does this mean that the mass of the BH cannot increase beyond the corresponding limit? I analyze some si
Externí odkaz:
http://arxiv.org/abs/2209.14585
Autor:
Senovilla, José M. M.
The existence of gravitational radiation arriving at null infinity -- i.e. escaping from the physical system -- is addressed in the presence of a non-negative cosmological constant $\Lambda\geq 0$. The case with vanishing $\Lambda$ is well understood
Externí odkaz:
http://arxiv.org/abs/2208.05436
Autor:
Senovilla, José M M
Penrose's crucial contributions to General Relativity, symbolized by his 1965 singularity theorem, received (half of) the 2020 Nobel prize in Physics. A renewed interest in the ideas and implications behind that theorem, its later developments, and o
Externí odkaz:
http://arxiv.org/abs/2206.13925
Autor:
Senovilla, José M. M.
The 2020 Nobel prize in Physics has revived the interest in the singularity theorems and, in particular, in the Penrose theorem published in 1965. In this short paper I briefly review the main ideas behind the theorems and then proceed to an evaluati
Externí odkaz:
http://arxiv.org/abs/2108.07296
Publikováno v:
Class. Quant. Grav. 39 10LT01 2022
A method for deriving the asymptotic behaviour of any physical field is presented. This leads to a geometrically meaningful derivation of the peeling properties for arbitrary values of the cosmological constant. Application to the outstanding case of
Externí odkaz:
http://arxiv.org/abs/2108.01461
Publikováno v:
Class. Quant. Grav. 39 165012 2022
This is the second of two papers that study the asymptotic structure of space-times with a non-negative cosmological constant $\Lambda$. This paper deals with the case $\Lambda >0$. Our approach is founded on the `tidal energies' built with the Weyl
Externí odkaz:
http://arxiv.org/abs/2105.09167