Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Cristobal Laporte"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 2, Pp 1-12 (2023)
Abstract In the present work, we investigate the consequences of running gravitational coupling on the properties of the three-dimensional BTZ black hole. We take as starting point the functional form of gravitational coupling obtained in the context
Externí odkaz:
https://doaj.org/article/6cef5f4e021740f38e95904cb9aabc04
Publikováno v:
Physics Letters B, Vol 838, Iss , Pp 137666- (2023)
Wetterich's equation provides a powerful tool for investigating the existence and universal properties of renormalization group fixed points exhibiting quantum scale invariance. Motivated by recent works on asymptotically safe scalar-tensor theories,
Externí odkaz:
https://doaj.org/article/e4a9dc8b128144d1803de000d65b74fa
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-50 (2021)
Abstract Asymptotic Safety provides an elegant mechanism for obtaining a consistent high-energy completion of gravity and gravity-matter systems. Following the initial idea by Steven Weinberg, the construction builds on an interacting fixed point of
Externí odkaz:
https://doaj.org/article/7477704f037b4d46b180df29df28334c
Autor:
Cristobal Laporte, Benjamin Koch
Publikováno v:
Physical Review D, 103, 4, pp. 1-15
Physical Review D, 103, 1-15
Physical Review
Physical Review D, 103, 1-15
Physical Review
In this work, a novel mechanism for spontaneous symmetry breaking is presented. This mechanism incorporates gravity in the generation of masses for gauge fields, showing that the Higgs mechanism can take place even without a quartic self-interaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::651351e85351949f23b50508d26873f3
https://hdl.handle.net/2066/230786
https://hdl.handle.net/2066/230786
Publikováno v:
Journal of Cosmology and Astroparticle Physics, 2022, 1-23
Journal of Cosmology and Astroparticle Physics, 2022, 10, pp. 1-23
Journal of Cosmology and Astroparticle Physics, 2022, 10, pp. 1-23
We study the statefinder parameters of a cosmological model based on scale-dependent gravity. The effective Einstein field equations come from an average effective action. From the dynamical system, we derive analytical expressions that improve the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::408344b90387e9dab68adc7682c78fb1
http://arxiv.org/abs/2205.05592
http://arxiv.org/abs/2205.05592
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2021:019
Scale-dependence is a common feature to all effective models of quantum gravity. In this paper, a cosmological model based on the scale-dependent scenario of gravity is presented. It is argued that such models, where the scale-dependence appears as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::984e35d5f551d0bcb256399c0ee214a7
https://doi.org/10.1088/1475-7516/2021/06/019
https://doi.org/10.1088/1475-7516/2021/06/019
We argue that the discrepancy between the Planck mass scale and the observed value of the cosmological constant can be largely attenuated if those quantities are understood as a result of effective, and thus scale-dependent, couplings. We exemplify t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::641e3a32da21a7f7b2e8cfe74cde7c5b