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pro vyhledávání: '"Chillón P"'
Considering the so-called Ricci-based gravity theories, a family of extensions of General Relativity whose action is given by a non-linear function of contractions and products of the (symmetric part of the) Ricci tensor of an independent connection,
Externí odkaz:
http://arxiv.org/abs/2406.09526
An exponential modified gravity with additional logarithmic corrections is considered with the presence of an axion-like scalar field in the role of dark matter. Axion fields are thought to become important at late-times when the axion-like scalar fi
Externí odkaz:
http://arxiv.org/abs/2406.08831
Autor:
Alencar, G., Bronnikov, Kirill A., Rodrigues, Manuel E., Gómez, Diego Sáez-Chillón, Silva, Marcos V. de S.
Publikováno v:
Eur. Phys. J. C (2024) 84:745
One of the main issues in gravitation is the presence of singularities in the most common space-time solutions of General Relativity, as the case of black holes. A way of constructing regular solutions that remove spacelike singularities consists in
Externí odkaz:
http://arxiv.org/abs/2403.12897
In the era of gravitational waves physics, when detections of wave fronts are increasing in number, sensibility, frequencies and distances, gravitational physics has entered a period of maximum activity and brilliance. This has open a new window wher
Externí odkaz:
http://arxiv.org/abs/2403.04683
The cosmological evolution within the framework of exponential $F(R)$ gravity is analysed by assuming two forms for dark matter: (a) a standard dust-like fluid and (b) an axion scalar field. As shown in previous literature, an axion-like field oscill
Externí odkaz:
http://arxiv.org/abs/2310.20302
The present paper is devoted to a new black bounce solution that regularize the well-known rotating black string in $3+1$ dimensions. To do so, the procedure pointed out by Simpson-Visser is followed, which has been already applied successfully to ot
Externí odkaz:
http://arxiv.org/abs/2307.07404
Autor:
G. Alencar, Kirill A. Bronnikov, Manuel E. Rodrigues, Diego Sáez-Chillón Gómez, Marcos V. de S. Silva
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 7, Pp 1-11 (2024)
Abstract One of the main issues in gravitation is the presence of singularities in the most common space-time solutions of General Relativity, as the case of black holes. A way of constructing regular solutions that remove spacelike singularities con
Externí odkaz:
https://doaj.org/article/9f46e387328f40c29898c7f3047743df
In the era of precision cosmology, different observational data has led to precise measurements of the Hubble constant that differ significantly, what has been called the Hubble tension problem. In order to solve such a discrepancy, many different so
Externí odkaz:
http://arxiv.org/abs/2304.08255
The optical appearance of a body compact enough to feature an unstable bound orbit, when surrounded by an accretion disk, is expected to be dominated by a luminous ring of radiation enclosing a central brightness depression typically known as the sha
Externí odkaz:
http://arxiv.org/abs/2302.12064
Autor:
Sergio A. Chillón, Unai Fernandez-Gamiz, Ekaitz Zulueta, Ainara Ugarte-Anero, Jesus Maria Blanco
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-17 (2024)
Abstract The impact of mechanical ventilation on airborne diseases is not completely known. The recent pandemic of COVID-19 clearly showed that additional investigations are necessary. The use of computational tools is an advantage that needs to be i
Externí odkaz:
https://doaj.org/article/fd6195c72cd945cbad5d72787efbd875