Hybrid metric-Palatini brane system
نویسندگان
چکیده
منابع مشابه
Hybrid Metric-Palatini Gravity
Recently, the phenomenology of f(R) gravity has been scrutinized. This scrutiny has been motivated by the possibility to account for the self-accelerated cosmic expansion without invoking dark energy sources. Besides, this kind of modified gravity is capable of addressing the dynamics of several self-gravitating systems alternatively to the presence of dark matter. It has been established that ...
متن کاملCosmology of hybrid metric-Palatini f(X)-gravity
Salvatore Capozziello, Tiberiu Harko, Tomi S. Koivisto, Francisco S.N. Lobo, and Gonzalo J. Olmo Dipartimento di Scienze Fisiche, Università di Napoli ”Federico II”, Napoli, Italy INFN Sez. di Napoli, Compl. Univ. di Monte S. Angelo, Edificio G, Via Cinthia, I-80126, Napoli, Italy Department of Physics and Center for Theoretical and Computational Physics, The University of Hong Kong, Pok Fu Lam...
متن کاملInflation with Non-Minimal Coupling: Metric vs. Palatini Formulations
We analyze non-minimally coupled scalar field theories in metric (second-order) and Palatini (first-order) formalisms in a comparative fashion. After contrasting them in a general setup, we specialize to inflation and find that the two formalisms differ in their predictions for various cosmological parameters. The main reason is that dependencies on the non-minimal coupling parameter are differ...
متن کاملPalatini versus metric formulation in higher-curvature gravity
We compare the metric and the Palatini formalism to obtain the Einstein equations in the presence of higher-order curvature corrections that consist of contractions of the Riemann tensor, but not of its derivatives. We find that, with the exception of standard Einsteingravity, the two formalisms are not equivalent, but that the Palatini formalism is contained within the metric formalism, in the...
متن کاملMetric Fluctuations in Brane Worlds
Recently, a realization of the four-dimensional gravity on a brane in fivedimensional spacetime has been discussed. Randall and Sundrum have shown that the equation for the longitudinal components of the metric fluctuations admits a normalizable zero mode solution, which has been interpreted as the localized gravity on the brane. We find that equations, which include also the transverse compone...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2016
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.94.024020