Zobrazeno 1 - 10
of 978
pro vyhledávání: '"Mendoza Sergio"'
Publikováno v:
Symmetry 2024, 16(7), 899
We propose several hierarchical graphs that represent the semantic relations between physical theories, their fundamental constants and units of measurement. We begin with an alternative representation of Zelmanov's cube of fundamental constants as a
Externí odkaz:
http://arxiv.org/abs/2406.15517
Publikováno v:
International Journal of Geometric Methods in Modern Physics (2024) 2450209
We present comparisons of the deflection angles of massless and massive particles in the Schwarzschild space-time. For the case of photons in a general static space-time, we construct a spatial 3D equation of motion for their path that leads to an im
Externí odkaz:
http://arxiv.org/abs/2404.03174
Autor:
Mendoza, Sergio, Silva, Sarahi
We show that the matter Lagrangian of a non-perfect fluid takes the negative or positive value of the total energy density of the fluid, which is composed of the the rest plus internal energy densities. The ambiguity of the sign depends on the defini
Externí odkaz:
http://arxiv.org/abs/2311.18153
Using publicly available gamma-ray observations of Saggitarius A* (Sgr A*), we constructed its ~6 months (from 2022 June 22 to 2022 December 19) light curve and subsequently we built its associated periodogram to search for a clear periodical signal.
Externí odkaz:
http://arxiv.org/abs/2311.05875
Autor:
Mendoza, Sergio
Ancient mesoamerican cultures built a short ritual 260 day calendar and used it for daily routinary life. Using simple arithmetic calculations it is first shown that by forcing the introduction of the the fundamental number 13 to calculate days in a
Externí odkaz:
http://arxiv.org/abs/2309.00598
Autor:
Mendoza, Sergio
Publikováno v:
International Journal of Geometric Methods in Modern Physics Vol. 20, No. 07, 2350107 (2023)
It is shown in this article that if the Einstein Equivalence Principle is valid on a particular metric theory of gravitation in a spherically symmetric space-time, then the time metric component is not equal to the negative of the inverse radial one
Externí odkaz:
http://arxiv.org/abs/2308.14271