Zobrazeno 1 - 10
of 10 235
pro vyhledávání: '"García García Á"'
We show that a universe with a nonminimally coupled scalar field can fit current measurements of the expansion rate of the Universe better than the standard $\Lambda$-Cold Dark Matter model or other minimally coupled dark energy models. While we find
Externí odkaz:
http://arxiv.org/abs/2409.17019
Given the growth in the variety and precision of astronomical datasets of interest for cosmology, the best cosmological constraints are invariably obtained by combining data from different experiments. At the likelihood level, one complication in doi
Externí odkaz:
http://arxiv.org/abs/2409.01407
Publikováno v:
Phys. Rev. D 110 (2024) 083528
New constraints on the expansion rate of the Universe seem to favor evolving dark energy in the form of thawing quintessence models, i.e., models for which a canonical, minimally coupled scalar field has, at late times, begun to evolve away from pote
Externí odkaz:
http://arxiv.org/abs/2408.17318
Autor:
Clifford, Matt, Erskine, Jonathan, Hepburn, Alexander, Santos-Rodríguez, Raúl, Garcia-Garcia, Dario
Class imbalance poses a significant challenge in classification tasks, where traditional approaches often lead to biased models and unreliable predictions. Undersampling and oversampling techniques have been commonly employed to address this issue, y
Externí odkaz:
http://arxiv.org/abs/2407.11878
We assess the usefulness of gradient-based samplers, such as the No-U-Turn Sampler (NUTS), by comparison with traditional Metropolis-Hastings algorithms, in tomographic $3 \times 2$ point analyses. Specifically, we use the DES Year 1 data and a simul
Externí odkaz:
http://arxiv.org/abs/2406.04725
Autor:
Berrocoso, M., Fernández-Ros, A., Ramírez, M. E., Salamanca, J. M., Torrecillas, C., Pérez-Peña, A., Páez, R., García-García, A., Jiménez-Teja, Y., García-García, F., Soto, R., Gárate, J., Martín-Davila, J., Sánchez-Alzola, A., de Gil, A., Fernández-Prada, J. A., Jigena, B.
Publikováno v:
In Capra, A., Dietrich, R. (eds) Geodetic and Geophysical Observations in Antarctica. Springer, Berlin, Heidelberg. 2008
Since 1987, Spain has been continuously developing several scientific projects, mainly based on Earth Sciences, in Geodesy, Geochemistry, Geology or Volcanology. The need of a geodetic reference frame when doing hydrographic and topographic mapping m
Externí odkaz:
http://arxiv.org/abs/2402.02650
Autor:
Mazzucchelli, Alessio, Garcia-Garcia, Adrian, Garces, Elena, Rivas-Manzaneque, Fernando, Moreno-Noguer, Francesc, Penate-Sanchez, Adrian
Advances in NERFs have allowed for 3D scene reconstructions and novel view synthesis. Yet, efficiently editing these representations while retaining photorealism is an emerging challenge. Recent methods face three primary limitations: they're slow fo
Externí odkaz:
http://arxiv.org/abs/2405.19876
We identify a time crystal phase characterized by a frequency half of the driving frequency in disordered superconductors by employing the time dependent Bogoliubov-de Gennes formalism at zero temperature with a periodically driven coupling constant.
Externí odkaz:
http://arxiv.org/abs/2405.14216
Let $S\subseteq \mathbb N^p$ be a semigroup, any $P\subseteq S$ is an ideal of $S$ if $P+S\subseteq P$, and an $I(S)$-semigroup is the affine semigroup $P\cup \{0\}$, with $P$ an ideal of $S$. We characterise the $I(S)$-semigroups and the ones that a
Externí odkaz:
http://arxiv.org/abs/2405.14648
The merger of two magnetized compact objects, such as neutron stars, forms a compact object which may launch a relativistic and collimated jet. Numerical simulations of the process show that a dense and highly magnetized medium surrounds the system.
Externí odkaz:
http://arxiv.org/abs/2403.17086