Zobrazeno 1 - 10
of 7 409
pro vyhledávání: '"Crispim, A."'
This work investigates whether phantom scalar fields combined with nonlinear electrodynamics (NED) can serve as sources for generalized Ellis-Bronnikov wormhole (GEB) spacetimes. This generalization of the Ellis-Bronnikov metric holds significant rel
Externí odkaz:
http://arxiv.org/abs/2410.11147
We provide a methodology for decoupling the bulk gravitational field equations of braneworld black holes to suppress the bulk singularities. To achieve this, we apply a linear Minimal Geometric Deformation (MGD) with respect to a coupling constant \(
Externí odkaz:
http://arxiv.org/abs/2410.06189
Finite modular family symmetry can emerge from top-down approaches based on heterotic string theory or Type IIB string theory. We show that, in addition to such approaches, it can also emerge from local F-Theory bottom-up constructions. As a first ex
Externí odkaz:
http://arxiv.org/abs/2407.06618
We extend the recent approach from reference [1] to obtain complete and analytic solutions (both brane and bulk) of a Simpson-Vaser (SV) geometry within a braneworld framework. The embedded geometry can represent a traversable wormhole (TWH), a one-w
Externí odkaz:
http://arxiv.org/abs/2407.03528
We present a novel Artificial Intelligence approach for Beyond the Standard Model parameter space scans by augmenting an Evolutionary Strategy with Novelty Detection. Our approach leverages the power of Evolutionary Strategies, previously shown to qu
Externí odkaz:
http://arxiv.org/abs/2402.07661
We propose symbolic regression as a powerful tool for studying Beyond the Standard Model physics. As a benchmark model, we consider the so-called Constrained Minimal Supersymmetric Standard Model, which has a four-dimensional parameter space defined
Externí odkaz:
http://arxiv.org/abs/2405.18471
Publikováno v:
JCAP 10 (2024) 063
We provide a way for embedding a 4-dimensional geometry corresponding to the Simpson Visser (SV) spacetime which is capable of representing a traversable wormhole, a one-way wormhole, or a regular black hole into a Randall-Sundrum setup. To achieve t
Externí odkaz:
http://arxiv.org/abs/2405.08048
Autor:
Romão, Miguel Crispim, Croon, Djuna
This paper presents a machine learning-based method for the detection of the unique gravitational microlensing signatures of extended dark objects, such as boson stars, axion miniclusters and subhalos. We adapt MicroLIA, a machine learning-based pack
Externí odkaz:
http://arxiv.org/abs/2402.00107
Publikováno v:
JCAP 06 (2024) 042
Theoretically, it has been proposed that objects traveling radially along regular black holes (RBHs) would not be destroyed because of finite tidal forces and the absence of a singularity. However, the matter source allows the creation of an inner ho
Externí odkaz:
http://arxiv.org/abs/2310.01734
We study a No-Scale supergravity inflation model which has a non-minimal deformation of the K\"ahler potential and a Wess-Zumino superpotential extended by the inclusion of a Polonyi mass term. The non-minimal structure of the K\"ahler potential is r
Externí odkaz:
http://arxiv.org/abs/2309.17132