Nonlocal gravity. Conceptual aspects and cosmological predictions
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2018/03/002
Abstract: Even if the fundamental action of gravity is local, the corresponding quantum effective action, that includes the effect of quantum fluctuations, is a nonlocal object. These nonlocalities are well understood in the ultraviolet regime but… read more here.
Keywords: nonlocal gravity; conceptual aspects; model; gravity ... See more keywords
Generalized nonlocal gravity framework based on Poincaré gauge theory
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DOI: 10.1103/physrevd.101.104054
Abstract: We describe a framework for a generalized nonlocal gravity theory inspired by Poincar\'e gauge theory. Our theory provides a unified description of previous nonlocal extensions of Einstein's theory of gravitation, in particular it allows for… read more here.
Keywords: generalized nonlocal; nonlocal gravity; theory; poincar gauge ... See more keywords
Black hole quasinormal modes and isospectrality in Deser-Woodard nonlocal gravity
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DOI: 10.1103/physrevd.103.064029
Abstract: We investigate the gravitational perturbations of the Schwarzschild black hole in the nonlocal gravity model recently proposed by Deser and Woodard (DW-II). The analysis is performed in the localized version in which the nonlocal corrections… read more here.
Keywords: nonlocal gravity; deser woodard; isospectrality; black hole ... See more keywords
Note on Reflection Positivity in Nonlocal Gravity
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DOI: 10.1134/s0021364019050011
Abstract: A necessary condition for reflection positivity is that the free propagator be positive. Contrary to recent claims in the literature, we show that this is indeed the case for a large class of nonlocal field… read more here.
Keywords: nonlocal gravity; note reflection; reflection positivity;
New Cosmological Solutions of a Nonlocal Gravity Model
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DOI: 10.3390/sym14010003
Abstract: A nonlocal gravity model (2) was introduced and considered recently, and two exact cosmological solutions in flat space were presented. The first solution is related to some radiation effects generated by nonlocal dynamics on dark… read more here.
Keywords: new cosmological; gravity; gravity model; nonlocal gravity ... See more keywords
Nonlocal Gravitomagnetism
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DOI: 10.3390/universe5090195
Abstract: We briefly review the current status of nonlocal gravity (NLG), which is a classical nonlocalgeneralization of Einstein’s theory of gravitation based on a certain analogy with the nonlocalelectrodynamics of media. Nonlocal gravity thus involves integro-differential… read more here.
Keywords: field; nonlocal gravitomagnetism; nonlocal gravity;