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pro vyhledávání: '"Martín, Marco San"'
Autor:
Bouali, Amine, Chaudhary, Himanshu, Hama, Rattanasak, Harko, Tiberiu, Sabau, Sorin V., Martín, Marco San
We further investigate the dark energy model based on the Finsler geometry inspired osculating Barthel-Kropina cosmology. The Barthel-Kropina cosmological approach is based on the introduction of a Barthel connection in an osculating Finsler geometry
Externí odkaz:
http://arxiv.org/abs/2301.10278
Autor:
Magaña, Juan, Martín, Marco San, Sureda, Joaquín, Rubio, Marcelo E., Araya, Ignacio J., Padilla, Nelson D.
We introduce a modification of the Press-Schechter formalism aimed to derive general mass functions for primordial black holes (PBHs). In this case, we start from primordial power spectra (PPS) which include a monochromatic spike, typical of ultra sl
Externí odkaz:
http://arxiv.org/abs/2207.13689
Autor:
Martín, Marco San, Rubio, Carlos
We have studied how local density perturbations could reconcile the Hubble tension. We reproduced a local void through a perturbed FLRW metric with a potential $\Phi$ which depends on both time and space. This method allowed us to obtain a perturbed
Externí odkaz:
http://arxiv.org/abs/2107.14377
Autor:
Martín, Marco San, Sureda, Joaquin
This paper introduces the first release of Pytearcat, a Python package developed to compute tensor algebra operations in the context of theoretical physics, for instance, in general relativity. Given that working with tensors can become a complex tas
Externí odkaz:
http://arxiv.org/abs/2106.15016
Autor:
Araya, Ignacio J., Rubio, Marcelo E., Martin, Marco San, Stasyszyn, Federico A., Padilla, Nelson D., Magana, Juan, Sureda, Joaquin
We introduce a statistical method for estimating magnetic field fluctuations generated from primordial black hole (PBH) populations. To that end, we consider monochromatic and extended Press-Schechter PBH mass functions, such that each constituent is
Externí odkaz:
http://arxiv.org/abs/2012.09585
Delta Gravity is a gravitational model based on an extension of General Relativity given by a new symmetry called $\tilde{\delta}$. In this model, new matter fields are added to the original matter fields, motivated by the additional symmetry. We cal
Externí odkaz:
http://arxiv.org/abs/2009.13305
About 70\% of the Universe is Dark Energy, but the physics community still does not know what it is. Delta Gravity (DG) is an alternative theory of gravitation that could solve this cosmological problem. Previously, we studied the Universe's accelera
Externí odkaz:
http://arxiv.org/abs/2001.08354
Publikováno v:
Universe 2019, 5(2), 51
A gravitational field model based on two symmetric tensors, $g_{\mu \nu}$ and $\tilde{g}_{\mu \nu}$, is studied, using a Markov Chain Monte Carlo (MCMC) analysis with the most updated catalog of SN-Ia. In this model, new matter fields are added to th
Externí odkaz:
http://arxiv.org/abs/1811.05828
Autor:
Shukla, Bhupendra Kumar, Bouali, Amine, Chaudhary, Himanshu, Tiwari, Rishi Kumar, Martín, Marco San
Publikováno v:
International Journal of Geometric Methods in Modern Physics; Dec2023, Vol. 20 Issue 14, p1-26, 26p
Akademický článek
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