Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Álvaro de la Cruz-Dombriz"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 3, Pp 1-13 (2021)
Abstract In this manuscript we will present the theoretical framework of the recently proposed infinite derivative theory of gravity with a non-symmetric connection. We will explicitly derive the field equations at the linear level and obtain new sol
Externí odkaz:
https://doaj.org/article/8345abd31f8f4d109229af4eda71b07e
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-19 (2020)
Abstract The cosmological scalar perturbations of standard matter are investigated in the context of extended teleparallel f(T) gravity theories using the $$1+3$$ 1+3 covariant formalism. After a review of the background gravitational field equations
Externí odkaz:
https://doaj.org/article/24040a8b86a846e088bddf98924997ee
Publikováno v:
Physics Letters B, Vol 790, Iss , Pp 345-353 (2019)
In the context of brane-world extra-dimensional theories, we compute the positron production from branon dark matter annihilations and compare with the AMS-02 data. Three different scenarios have been considered; the first two assume that either puls
Externí odkaz:
https://doaj.org/article/68dd8904d3a24d5386b667d3882c2d14
Autor:
Ulrich K. Beckering Vinckers, Álvaro de la Cruz-Dombriz, Ivan Kolář, Francisco J. Maldonado Torralba, Anupam Mazumdar
Publikováno v:
Physical Review D, 106(6):064037. AMER PHYSICAL SOC
We present the ghost-free infinite-derivative extensions of the Spherically-Reduced Gravity (SRG) and Callan-Giddings-Harvey-Strominger (CGHS) theories in two space-time dimensions. For the case of SRG, we specify the Schwarzschild-type gauge and dia
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2023:001
We study a quintessence model for which the scalar field is disformally coupled to dark matter. The background mimics the LCDM cosmological evolution and the quintessence potential is not specified. A disformal effect due to the quintessential mass i
Publikováno v:
E-Prints Complutense. Archivo Institucional de la UCM
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Gravitational collapse is still poorly understood in the context of $f(R)$ theories of gravity, since the Oppenheimer-Snyder model is incompatible with their junction conditions. In this work, we will present a systematic approach to the problem. Sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::794a42b9c849649547e5e31ae71dd0a6
http://arxiv.org/abs/2202.04439
http://arxiv.org/abs/2202.04439
Publikováno v:
Physics Letters
The stable pseudo-scalar degree of freedom of the quadratic Poincar\'e Gauge theory of gravity is shown to be a suitable dark matter candidate. We find the parameter space of the theory which can account for all the predicted cold dark matter, and co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82bc7dc5755977504788d95f364ce469
http://arxiv.org/abs/2112.03957
http://arxiv.org/abs/2112.03957
Autor:
Álvaro de la Cruz-Dombriz
Publikováno v:
Modified Gravity and Cosmology ISBN: 9783030837143
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcb0a747fa2ceab9f1ffef729d78950a
https://doi.org/10.1007/978-3-030-83715-0_5
https://doi.org/10.1007/978-3-030-83715-0_5
Publikováno v:
European Physical Journal
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-19 (2020)
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-19 (2020)
The cosmological scalar perturbations of standard matter are investigated in the context of extended teleparallel f(T) gravity theories using the $$1+3$$ 1+3 covariant formalism. After a review of the background gravitational field equations of f(T)
Publikováno v:
The European Physical Journal C. 80
The cosmological scalar perturbations of standard matter are investigated in the context of extended teleparallel $f(T)$ gravity theories using the $1+3$ covariant formalism. After a review of the background, gravitational field equations of $f(T)$ g