Výsledky vyhledávání - "Villegas , Fulgencio"

Sombra del agujero negro de Schwarzschild

Autor: Villegas, Fulgencio

Publikováno v: Revista de Investigación de Física; Vol. 25 No. 3 (2022); 40-44
Revista de Investigación de Física; Vol. 25 Núm. 3 (2022); 40-44

In this work, the shadow of the Schwarzschild black hole is studied analytically. The shadow of an object is understood as the shape that said object has in space, seen by an observer when only the properties of space-time are considered. To nd the a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=4dc99724cf04::b568366dd6d77709e9e61ad183f60971
https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/23592

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Solución alternativa para la ecuación dinámica de la cuerda

Autor: Huamaní, Richard, Villegas , Fulgencio

Publikováno v: Revista de Investigación de Física; Vol. 25 No. 2 (2022); 1-6
Revista de Investigación de Física; Vol. 25 Núm. 2 (2022); 1-6

In this article, initially, a review of some classical aspects of bosonic string theory is made. In addition, the light cone coordinates are analyzed, as a covariant quantization method related to these coordinates with the proper coordinates through

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=4dc99724cf04::8db102998c9282145e6d3cdf5794f76d
https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/22926

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Ecuaciones de Friedmann en las teorías de gravedad modificada f(R)

Autor: Villegas , Fulgencio

Publikováno v: Revista de Investigación de Física; Vol. 24 No. 3 (2021); 25-30
Revista de Investigación de Física; Vol. 24 Núm. 3 (2021); 25-30
Revistas Universidad Nacional Mayor de San Marcos
Universidad Nacional Mayor de San Marcos
instacron:UNMSM

In this work, the deduction of Friedmann's equations is presented in the context of modified gravity theories f(R); it has been considered to present them as a function of the constant k associated with the curvature of the hypersurface. To deduce it

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3056::4d6a39202a70c81c21922a355b8f951a
https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/21161

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La energía oscura en la cosmología estándar

Autor: Villegas, Fulgencio

Publikováno v: Revista de Investigación de Física; Vol. 24 No. 2 (2021); 35-39
Revista de Investigación de Física; Vol. 24 Núm. 2 (2021); 35-39
Revistas Universidad Nacional Mayor de San Marcos
Universidad Nacional Mayor de San Marcos
instacron:UNMSM

A revision of the standard model of cosmology is presented with an emphasis on the Friedmann equation. A summary of the evidence for the accelerated expansion of the universe is shown; In order to explain such an acceleration in expansion, the charac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3056::dd281eb4a4a26b79676f8cdfd92c3481
https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/20359

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Espacio-tiempo de Schwarzschild con quintaesencia

Autor: Villegas , Fulgencio

Publikováno v: Revista de Investigación de Física; Vol. 24 No. 2 (2021); 31-34
Revista de Investigación de Física; Vol. 24 Núm. 2 (2021); 31-34
Revistas Universidad Nacional Mayor de San Marcos
Universidad Nacional Mayor de San Marcos
instacron:UNMSM

Recent discoveries determine that the universe is expanding rapidly. In order to explain this acceleration,a component of dark energy called quintessence has been proposed. In this article it is proposed tointroduce quintessence in Schwarzschild spac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3056::cf0b90cc1c0cf5ce4f346a07f73196f5
https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/20413

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Relatividad y el Sistema de Posicionamiento Global (GPS)

Autor: Villegas, Fulgencio

Publikováno v: Revista de Investigación de Física; Vol. 23 No. 1 (2020); 44-47
Revista de Investigación de Física; Vol. 23 Núm. 1 (2020); 44-47
Revistas Universidad Nacional Mayor de San Marcos
Universidad Nacional Mayor de San Marcos
instacron:UNMSM

In this article we explain the relativistic eects in the Global Positioning System (GPS); Corrections due to Special Relativity and General Relativity are analyzed. Although the gravitational effects are weak and the speeds are small, they neverthele

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3eb4f0eb53701afa654d8361e02fd996
https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/20289

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Espacio-tiempo Anti-de Sitter (AdS)

Autor: Villegas, Fulgencio

Publikováno v: Revista de Investigación de Física; Vol. 22 No. 2 (2019); 19-24
Revista de Investigación de Física; Vol. 22 Núm. 2 (2019); 19-24
Revistas Universidad Nacional Mayor de San Marcos
Universidad Nacional Mayor de San Marcos
instacron:UNMSM

In this work a basic introduction is made about the space-time of Sitter and Anti-Sitter. For the Sitter space, two equivalent metrics are calculated, one using static coordinates and the other using Friedmann- Lemaître-Robertson-Walker coordinates

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3056::ae3ad3b90dbfd4702de76d1f8bd577f2
https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/20292

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