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pro vyhledávání: '"Fernandes, Pedro"'
Partial least squares (PLS) is a simple factorisation method that works well with high dimensional problems in which the number of observations is limited given the number of independent variables. In this article, we show that PLS can perform better
Externí odkaz:
http://arxiv.org/abs/2409.05713
Autor:
Ventagli, Giulia, Fernandes, Pedro G. S., Maselli, Andrea, Padilla, Antonio, Sotiriou, Thomas P.
Phase transitions can play an important role in the cosmological constant problem, allowing the underlying vacuum energy, and therefore the value of the cosmological constant, to change. Deep within the core of neutron stars, the local pressure may b
Externí odkaz:
http://arxiv.org/abs/2404.19012
Autor:
Fernandes, Pedro Afonso
Economic forecasting is concerned with the estimation of some variable like gross domestic product (GDP) in the next period given a set of variables that describes the current situation or state of the economy, including industrial production, retail
Externí odkaz:
http://arxiv.org/abs/2404.03737
In this work, we explore the properties and shadows of spin-induced scalarized black holes, as well as investigate how a Ricci coupling influences them. Our findings reveal significant deviations from the Kerr metric in terms of the location and geod
Externí odkaz:
http://arxiv.org/abs/2403.14596
In general relativity, all vacuum black holes are described by the Kerr solution. Beyond general relativity, there is a prevailing expectation that deviations from the Kerr solution increase with the horizon curvature. We challenge this expectation b
Externí odkaz:
http://arxiv.org/abs/2312.11430
Publikováno v:
Journal of Property Investment & Finance, 2024, Vol. 42, Issue 6, pp. 554-575.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/JPIF-02-2024-0025
Publikováno v:
Class.Quant.Grav. 40 (2023) 20, 205021
In this work we construct and analyse non-perturbative stationary and axially-symmetric black hole solutions in General Relativity coupled to an electromagnetic and an axion field. The axion field is coupled to the electromagnetic field, which leads
Externí odkaz:
http://arxiv.org/abs/2306.03662
Autor:
Fernandes, Pedro G. S.
Publikováno v:
Phys.Rev.D 108 (2023) 6, L061502
We present analytic stationary and axially-symmetric black hole solutions to the semiclassical Einstein equations that are sourced by the trace anomaly. We also find that the same spacetime geometry satisfies the field equations of a subset of Hornde
Externí odkaz:
http://arxiv.org/abs/2305.10382
Publikováno v:
Class. Quantum Grav. (2023) 40 165001
We discuss and implement a spectral method approach to computing stationary and axisymmetric black hole solutions and their properties in modified theories of gravity. The resulting code is written in the Julia language and is transparent and easily
Externí odkaz:
http://arxiv.org/abs/2212.07293