Zobrazeno 1 - 10
of 375
pro vyhledávání: '"Araya,Ignacio"'
Autor:
Anastasiou, Giorgos, Araya, Ignacio J., Bueno, Pablo, Moreno, Javier, Olea, Rodrigo, Lopez, Alejandro Vilar
The vacuum entanglement entropy of a general conformal field theory (CFT) in $d=5$ spacetime dimensions contains a universal term, $F(A)$, which has a complicated and non-local dependence on the geometric details of the region $A$ and the theory. Ana
Externí odkaz:
http://arxiv.org/abs/2409.19485
Autor:
Anastasiou, Giorgos, Araya, Ignacio J., Ávila, Daniel, Guijosa, Alberto, Patiño-López, Sergio
In the context of the holographic correspondence, we introduce a purely extrinsic renormalization prescription, exemplified with the case of a minimally-coupled scalar field in AdS space. The counterterms depend only on the field and its radial deriv
Externí odkaz:
http://arxiv.org/abs/2405.15186
Aims: The origin of the seeds of galactic magnetic fields is a subject that remains under debate; here we will explore a new possible mechanism that could provide such seed from charge asymmetries in slowly rotating protogalaxies. Methods: We use cur
Externí odkaz:
http://arxiv.org/abs/2309.14930
We present improved estimates of the electric charge that black holes could hold when these are embedded in the ionised plasma within galaxies. We have implemented the spontaneous emission of charges of opposite sign to that of the black hole via ath
Externí odkaz:
http://arxiv.org/abs/2309.14929
Publikováno v:
JHEP, 11 (2023) 036
We present a streamlined proof that any Einstein-AdS space is a solution of the Lu, Pang and Pope conformal gravity theory in six dimensions. The reduction of conformal gravity into Einstein theory manifestly shows that the action of the latter can b
Externí odkaz:
http://arxiv.org/abs/2308.09140
We describe a method to generate scalar-tensor theories with Weyl symmetry, starting from arbitrary purely metric higher derivative gravity theories. The method consists in the definition of a conformally-invariant metric $\hat{g}_{\mu \nu}$, that is
Externí odkaz:
http://arxiv.org/abs/2307.13531
Autor:
Cure, Michel, Araya, Ignacio
Publikováno v:
Galaxies 2023, 11(3), 68
Mass loss from massive stars plays a determining role in their evolution through the upper Hertzsprung-Russell diagram. The hydrodynamic theory that describes their steady-state winds is the line-driven wind theory (m-CAK). From this theory, the mass
Externí odkaz:
http://arxiv.org/abs/2305.11666
Autor:
Anastasiou, Giorgos, Araya, Ignacio J., Busnego-Barrientos, Mairym, Corral, Cristobal, Merino, Nelson
Publikováno v:
Phys. Rev. D 107, (2023) 104049
We study a conformally coupled scalar-tensor theory with a quartic potential possessing local conformal symmetry up to a boundary term. We show that requiring the restoration of the full local conformal symmetry fixes the counterterms that render the
Externí odkaz:
http://arxiv.org/abs/2212.04364
Autor:
Araya, Ignacio Arana, author
Publikováno v:
Personalism and Personalist Regimes, 2024.
Externí odkaz:
https://doi.org/10.1093/oso/9780192848567.003.0006
We provide a new derivation of the Hawking mass and Willmore energy functionals for asymptotically AdS spacetimes, by embedding Einstein-AdS gravity in Conformal Gravity. By construction, the evaluation of the four-dimensional Conformal Gravity actio
Externí odkaz:
http://arxiv.org/abs/2209.02006