Zobrazeno 1 - 10
of 3 185
pro vyhledávání: '"Gábriel, R."'
Publikováno v:
Bolet\'in de la Asociaci\'on Argentina de Astronom\'ia, vol. 65, p.217 (2024)
In this work we analyzed the physical origin of the primordial inhomogeneities during the inflation era. The proposed framework is based, on the one hand, on semiclassical gravity, in which only the matter fields are quantized and not the spacetime m
Externí odkaz:
http://arxiv.org/abs/2411.04816
In this work, we introduce and analyse discontinuous Galerkin (dG) methods for the drift-diffusion model. We explore two dG formulations: a classical interior penalty approach and a nodally bound-preserving method. Whilst the interior penalty method
Externí odkaz:
http://arxiv.org/abs/2410.05040
A Planck scale inflationary era -- in a quantum gravity theory predicting discreteness of quantum geometry at the fundamental scale -- produces the scale invariant spectrum of inhomogeneities with very small tensor-to-scalar ratio of perturbations an
Externí odkaz:
http://arxiv.org/abs/2405.12534
Autor:
Feng, Demeng, Kumar, Tanuj, Yin, Shenwei, Mah, Merlin, Lin, Phyo, Fortman, Margaret, Jaffe, Gabriel R., Wan, Chenghao, Mei, Hongyan, Xiao, Yuzhe, Synowicki, Ron, Warzoha, Ronald J., Brar, Victor W., Talghader, Joseph J., Kats, Mikhail A.
Laser-light sails are a spacecraft concept wherein lightweight "sails" are propelled to high speeds by lasers with high intensities. The sails must comprise materials with low optical loss, to minimize the risk of laser damage. Stoichiometric silicon
Externí odkaz:
http://arxiv.org/abs/2404.04449
Autor:
Silva, Gabriel R. de Andrade, Santos, Vagson Luiz de Carvalho, Bittencourt, Guilherme Henrique Rezende
We propose a physical mechanism for fine-tuning the phase of a domain wall around the equilibrium directions involving the application of an external field and a spin polarized current in opposite directions. In this way, the position of the domain w
Externí odkaz:
http://arxiv.org/abs/2403.15311
Machine learning interatomic potentials (MLIPs) are one of the main techniques in the materials science toolbox, able to bridge ab initio accuracy with the computational efficiency of classical force fields. This allows simulations ranging from atoms
Externí odkaz:
http://arxiv.org/abs/2403.04217
Autor:
Bueno, Isabella, Palma, Gabriel R., Lara, Idemauro A. R., Moral, Rafael A., Delalibera Jr, Italo, Godoy, Wesley A. C.
Understanding social immunity mechanisms in ant colonies remains crucial to comprehending the evolution of defense strategies in eusocial organisms. This study assumes the absence of the role of memory in the ants' defense strategy, considering that
Externí odkaz:
http://arxiv.org/abs/2402.05924
Autor:
Focassio, Bruno, Schleder, Gabriel R., Fazzio, Adalberto, Capaz, Rodrigo B., Lopes, Pedro V., Ferreira, Jaime, Enderlein, Carsten, Neto, Marcello B. Silva
We investigate the topological phase transitions driven by band warping and a transverse magnetic field, for three-dimensional Weyl semimetals. First, we use the Chern number as a mathematical tool to derive the topological phase diagram. Next, we as
Externí odkaz:
http://arxiv.org/abs/2401.06282
Autor:
Palma, Gabriel R., Mello, Rodrigo F., Godoy, Wesley A. C., Engel, Eduardo, Lau, Douglas, Markham, Charles, Moral, Rafael A.
Implementing insect monitoring systems provides an excellent opportunity to create accurate interventions for insect control. However, selecting the appropriate time for an intervention is still an open question due to the inherent difficulty of impl
Externí odkaz:
http://arxiv.org/abs/2312.16196
In this work we study different Implicit-Explicit (IMEX) schemes for incompressible flow problems with variable viscosity. Unlike most previous work on IMEX schemes, which focuses on the convective part, we here focus on treating parts of the diffusi
Externí odkaz:
http://arxiv.org/abs/2310.04182