Zobrazeno 1 - 10
of 143
pro vyhledávání: '"MERINO, Nelson"'
In this paper, we present the most general non-relativistic Chern-Simons gravity model in three spacetime dimensions. We first study the non-relativistic limit of the Mielke-Baekler gravity through a contraction process. The resulting non-relativisti
Externí odkaz:
http://arxiv.org/abs/2309.00500
Autor:
Anastasiou, Giorgos, Araya, Ignacio J., Busnego-Barrientos, Mairym, Corral, Cristobal, Merino, Nelson
Publikováno v:
Phys. Rev. D 107, (2023) 104049
We study a conformally coupled scalar-tensor theory with a quartic potential possessing local conformal symmetry up to a boundary term. We show that requiring the restoration of the full local conformal symmetry fixes the counterterms that render the
Externí odkaz:
http://arxiv.org/abs/2212.04364
We study matching conditions for a spherically symmetric thin shell in Lovelock gravity which can be read off from the variation of the corresponding first-order action. In point of fact, the addition of Myers' boundary terms to the gravitational act
Externí odkaz:
http://arxiv.org/abs/2204.00767
Autor:
Concha, Patrick1,2 (AUTHOR) patrick.concha@ucsc.cl, Merino, Nelson3,4 (AUTHOR), Rodríguez, Evelyn1,2 (AUTHOR)
Publikováno v:
European Physical Journal C -- Particles & Fields. Apr2024, Vol. 84 Issue 4, p1-12. 12p.
Publikováno v:
JHEP 02 (2021) 120
We show that the phase space of three-dimensional gravity contains two layers of dualities: between diffeomorphisms and a notion of "dual diffeomorphisms" on the one hand, and between first order curvature and torsion on the other hand. This is most
Externí odkaz:
http://arxiv.org/abs/2011.09873
Based on the insight gained by many authors over the years on the structure of the Einstein-Hilbert, Gauss-Bonnet and Lovelock gravity Lagrangians, we show how to derive -- in an elementary fashion -- their first-order, generalized "ADM" Lagrangian a
Externí odkaz:
http://arxiv.org/abs/2011.01296
Autor:
Garrido-Suárez, Bárbara B., Garrido, Gabino, Menéndez, Addis Bellma, Merino, Nelson, Valdés, Odalys, de la Paz, Nilia, Romero, Aylema, Delgado, Livan, Fernández, Miguel D., Piñeros, Octavio, Delgado-Hernández, René
Publikováno v:
In Journal of Integrative Medicine January 2023 21(1):34-46
Autor:
Concha, Patrick, Merino, Nelson, Rodríguez, Evelyn, Salgado-Rebolledo, Patricio, Valdivia, Omar
Publikováno v:
JHEP 1902 (2019) 002
In this work we present a BMS-like ansatz for a Chern-Simons theory based on the semi-simple enlargement of the Poincar\'e symmetry, also known as AdS-Lorentz algebra. We start by showing that this ansatz is general enough to contain all the relevant
Externí odkaz:
http://arxiv.org/abs/1810.12256
Autor:
Concha, Patrick, Merino, Nelson, Miskovic, Olivera, Rodríguez, Evelyn, Salgado-Rebolledo, Patricio, Valdivia, Omar
Publikováno v:
JHEP 10 (2018) 079
We study a three-dimensional Chern-Simons gravity theory based on the Maxwell algebra. We find that the boundary dynamics is described by an enlargement and deformation of the $\mathfrak{bms}_3$ algebra with three independent central charges. This sy
Externí odkaz:
http://arxiv.org/abs/1805.08834
Publikováno v:
Phys. Rev. D 98, 044031 (2018)
In this paper we show how to translate into tensorial language the Chern-Weil theorem for the Lorentz symmetry, which equates the difference of the Euler densities of two manifolds to the exterior derivative of a transgression form. For doing so we n
Externí odkaz:
http://arxiv.org/abs/1803.04741