Zobrazeno 1 - 10
of 583
pro vyhledávání: '"Dias, A. P. C."'
Using a mix of analytical and numerical methods, we construct new rotating, charged "hairy" black hole solutions of $D=5$, ${\cal N}=8$ gauged supergravity that are dual, via the AdS/CFT correspondence, to thermal states in $D=4$, ${\cal N}=4$ SYM at
Externí odkaz:
http://arxiv.org/abs/2411.18712
Autor:
Dias, Oscar J. C., Santos, Jorge E.
We investigate the low-energy regime of BFSS quantum mechanics using its holographic dual. We identify three distinct thermodynamic phases (black holes) and analyze their thermodynamic properties extensively, including phase transitions amongst the s
Externí odkaz:
http://arxiv.org/abs/2407.15921
The ability of surface polaritons (SPs) to enhance and manipulate light fields down to deep-subwavelength length scales enables applications in optical sensing and nonlinear optics at the nanoscale. However, the wavelength mismatch between light and
Externí odkaz:
http://arxiv.org/abs/2406.17480
We construct stationary, rotating black binaries in general relativity with a positive cosmological constant. We consider identical black holes with either aligned or anti-aligned spins. Both cases have less entropy than the corresponding single Kerr
Externí odkaz:
http://arxiv.org/abs/2406.10333
Christodoulou's formulation of Strong Cosmic Censorship (SCC) holds true for Kerr-de Sitter black holes. On the other hand, Reissner-Nordstr\"om-de Sitter black holes violate SCC. We do a detailed scan of the parameter space of Kerr-Newman-de Sitter
Externí odkaz:
http://arxiv.org/abs/2404.03724
Autor:
Grigorjew, Andreas, Dias, Fernando H. C., Cracco, Andrea, Rizzi, Romeo, Tomescu, Alexandru I.
Given a flow network, the Minimum Flow Decomposition (MFD) problem is finding the smallest possible set of weighted paths whose superposition equals the flow. It is a classical, strongly NP-hard problem that is proven to be useful in RNA transcript a
Externí odkaz:
http://arxiv.org/abs/2311.10563
Publikováno v:
Nanophotonics, Vol 13, Iss 25, Pp 4667-4681 (2024)
The ability of surface polaritons (SPs) to enhance and manipulate light fields down to deep-subwavelength length scales enables applications in optical sensing and nonlinear optics at the nanoscale. However, the wavelength mismatch between light and
Externí odkaz:
https://doaj.org/article/079e2c36b58842b2bd91476f13e861df
Scalar QNM spectra of Kerr and Reissner-Nordstr\'om revealed by eigenvalue repulsions in Kerr-Newman
Recent studies of the gravito-electromagnetic frequency spectra of Kerr-Newman (KN) black holes have revealed two families of quasinormal modes (QNMs), namely photon sphere modes and near-horizon modes. However, they can only be unambiguously disting
Externí odkaz:
http://arxiv.org/abs/2305.11216
Autor:
Lange, Roberto, Magalhães, Gabriel M., Rocha, Franciane F., Coimbra, Pedro V. S., Favero, Jovani L., Dias, Rodrigo A. C., Moraes, Antonio O. S., Schwalbert, Mateus P.
A new OpenFOAM application to simulate multiphase flows in porous media is formulated and tested. The proposed solver combines the Eulerian multi-fluid formulation for a system of phase fractions with Darcy's law for flows through porous media. It is
Externí odkaz:
http://arxiv.org/abs/2304.03390
Publikováno v:
Phys. Rev. D 108, L041502 (2023)
Due to coherent superradiant amplification, massive bosonic fields can trigger an instability in spinning black holes, tapping their energy and angular momentum and forming macroscopic Bose-Einstein condensates around them. This phenomenon produces g
Externí odkaz:
http://arxiv.org/abs/2304.01265