Zobrazeno 1 - 10
of 4 554
pro vyhledávání: '"Maroto, P"'
We consider theories which break the invariance under diffeomorphisms (Diff) down to transverse diffeomorphisms (TDiff) in the matter sector, consisting of multiple scalar fields. In particular, we regard shift-symmetric models with two free TDiff sc
Externí odkaz:
http://arxiv.org/abs/2409.11991
We explore the consequences of the breaking of diffeomorphism (Diff) invariance in the electromagnetic sector. We consider the breaking of Diff symmetry down to the subgroup of transverse diffeomorphisms (TDiff) and analyse its impact on the generati
Externí odkaz:
http://arxiv.org/abs/2407.04647
Autor:
Bello-Morales, Antonio G., Jiménez, Jose Beltrán, Cano, Alejandro Jiménez, Maroto, Antonio L., Koivisto, Tomi S.
Theories formulated in the arena of teleparallel geometries are generically plagued by ghost-like instabilities or other pathologies that are ultimately caused by the breaking of some symmetries. In this work, we construct a class of ghost-free theor
Externí odkaz:
http://arxiv.org/abs/2406.19355
Brain development involves a sequence of structural changes from early stages of the embryo until several months after birth. Currently, ultrasound is the established technique for screening due to its ability to acquire dynamic images in real-time w
Externí odkaz:
http://arxiv.org/abs/2406.17250
Autor:
Maroto, Javier, Frossard, Pascal
Deep learning has been able to outperform humans in terms of classification accuracy in many tasks. However, to achieve robustness to adversarial perturbations, the best methodologies require to perform adversarial training on a much larger training
Externí odkaz:
http://arxiv.org/abs/2405.06298
Publikováno v:
Phys. Rev. D 109, 103504 (2024)
We study the dynamics of Abelian gauge fields invariant under transverse diffeomorphisms (TDiff) in cosmological contexts. We show that in the geometric optics approximation, very much as for Diff invariant theories, the corresponding massless gauge
Externí odkaz:
http://arxiv.org/abs/2402.18368
We explore the idea of restoring the full diffeomorphism (Diff) invariance in theories with only transverse diffeomorphisms (TDiff) by the introduction of additional fields. In particular, we consider in detail the case of a TDiff invariant scalar fi
Externí odkaz:
http://arxiv.org/abs/2402.17422
Publikováno v:
(2024). Science of The Total Environment (Vol. 926, p. 171744). Elsevier BV
Snow poles are inexpensive systems composed of a wooden mast with temperature sensors affixed at varying heights with the purpose of estimating the snow depth. They are frequently utilised in cold, remote regions where the maintenance of complex moni
Externí odkaz:
http://arxiv.org/abs/2402.02927
Autor:
Ruano, Marta, Mateos-Maroto, Ana, Ortega, Francisco, Ritacco, Hernan, Rubio, Jose E. F., Guzman, Eduardo, Rubio, Ramon G.
Publikováno v:
Langmuir 37 (2021), 6189-6200
This work presents a simply methodology for coating small unilamellar liposomes bearing different degrees of positive charge with polyelectrolyte multilayers using the sequential Layer-by-Layer (LbL) deposition method. The liposomes were made of mixt
Externí odkaz:
http://arxiv.org/abs/2401.15329
In this work we present a unified model for the cosmological dark sector. The theory is based on a simple minimally coupled scalar field whose action only contains a canonical kinetic term and is invariant under transverse diffeomorphisms (TDiff). Th
Externí odkaz:
http://arxiv.org/abs/2311.16836