Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Saez, Diego"'
Rendering Wikipedia content through mobile and augmented reality mediums can enable new forms of interaction in urban-focused user communities facilitating learning, communication and knowledge exchange. With this objective in mind, in this work we d
Externí odkaz:
http://arxiv.org/abs/1910.09705
Autor:
Dale, Roberto, Sáez, Diego
The vector-tensor (VT) theory of gravitation revisited in this article was studied in previous papers, where it was proved that VT works and deserves attention. New observational data and numerical codes have motivated further development which is pr
Externí odkaz:
http://arxiv.org/abs/1610.08872
Autor:
Puchades, Neus, Sáez, Diego
Publikováno v:
Advances in Space Research 57 (2016) 499
In the context of relativistic positioning, the coordinates of a given user may be calculated by using suitable information broadcast by a 4-tuple of satellites. Our 4-tuples belong to the Galileo constellation. Recently, we estimated the positioning
Externí odkaz:
http://arxiv.org/abs/1601.05712
Publikováno v:
Astrophys. Space Sci (2015) 357:116
A certain vector-tensor (VT) theory of gravitation was tested in previous papers. In the background universe, the vector field of the theory has a certain energy density, which is appropriate to play the role of vacuum energy (cosmological constant).
Externí odkaz:
http://arxiv.org/abs/1509.04162
Autor:
Puchades, Neus, Sáez, Diego
Publikováno v:
ACTA FUTURA (2013)
The motion of satellite constellations similar to GPS and Galileo is numerically simulated and, then, the region where bifurcation (double positioning) occurs is appropriately represented. In the cases of double positioning, the true location may be
Externí odkaz:
http://arxiv.org/abs/1404.1000
Autor:
Dale, Roberto, Sáez, Diego
Publikováno v:
Physical Review D (2014)
We study relevant cosmological topics in the framework of a certain vector-tensor theory of gravitation (hereafter VT). This theory is first compared with the so-called extended electromagnetism (EE). These theories have a notable resemblance and bot
Externí odkaz:
http://arxiv.org/abs/1404.0631
Autor:
Puchades, Neus, Sáez, Diego
Publikováno v:
Astrophys. Space Sci. (2014)
Global navigation satellite systems use appropriate satellite constellations to get the coordinates of an user -close to Earth- in an almost inertial reference system. We have simulated both GPS and GALILEO constellations. Uncertainties in the satell
Externí odkaz:
http://arxiv.org/abs/1404.0562
Autor:
Dale, Roberto, Sáez, Diego
A certain vector-tensor (VT) theory is revisited. It was proposed and analyzed as a theory of electromagnetism without the standard gauge invariance. Our attention is first focused on a detailed variational formulation of the theory, which leads to b
Externí odkaz:
http://arxiv.org/abs/1301.2816
Autor:
Puchades, Neus, Sáez, Diego
We simulate the satellite constellations of two Global Navigation Satellite Systems: Galileo (EU) and GPS (USA). Satellite motions are described in the Schwarzschild space-time produced by an idealized spherically symmetric non rotating Earth. The tr
Externí odkaz:
http://arxiv.org/abs/1112.6054
Autor:
Lapiedra, Ramon, Sáez, Diego
Publikováno v:
Phys.Rev.D77:104011,2008
We discuss whether some perturbed Friedmann-Robertson-Walker (FRW) universes could be creatable, i. e., could have vanishing energy, linear momentum and angular momentum, as it could be expectable if the Universe arose as a quantum fluctuation. On ac
Externí odkaz:
http://arxiv.org/abs/0804.0861