Theoretical aspects of massive gravity

WebbIn metric formalism, the simplest four-dimensional action in f ( R ) gravity is: A = c 4 16 π G ∫ d 4 x - g f ( R ) + L matter. (1) where g is the determinant of the metric g μ ν , and L matter is the standard perfect fluid matter Lagrangian. Varying the action Equation ( 1) with respect to the metric tensor, we obtain the field equations ... Webb9 jan. 2012 · K. Hinterbichler, Theoretical aspects of massive gravity, arXiv:1105.3735 [ INSPIRE ]. D. Boulware and S. Deser, Can gravitation have a finite range?, Phys. Rev. D 6 (1972) 3368 [ INSPIRE ]. ADS Google Scholar C. de Rham, G. Gabadadze and A.J. Tolley, Resummation of massive gravity, Phys. Rev. Lett. 106 (2011) 231101 [ arXiv:1011.1232] …

Theoretical aspects of massive gravity - NASA/ADS

WebbWe describe the freedom of choosing a square root in massive gravity from algebraic point of view. This contribution is based on the talk given by one of us (AG) ... Hinterbichler, … Webb7 apr. 2024 · 13 April 2024 Astronomy Now. The original Event Horizon Telescope image of the supermassive black hole at the heart of galaxy M87 (left) was the first to capture the shadow of a black hole’s event horizon. Researchers have reconstructed that image using machine learning to sharpen details (right). cry syndrome https://hodgeantiques.com

On semi-classical topologically massive gravity in three …

Webb1 apr. 2016 · We derive new constraints on massive gravity from unitarity and analyticity of scattering amplitudes. Our results apply to a general effective theory defined by Einstein gravity plus the leading soft diffeomorphism-breaking corrections. We calculate scattering amplitudes for all combinations of tensor, vector, and scalar polarizations. WebbAbstract: General relativity describes gravity in terms of an interacting massless spin-2 field—the graviton. This 100-year-old theory has been spectacularly successful in explaining observations. However, theoretical exploration and the cosmological constant problem motivate the study of alternative theories of gravity. Webb(AG) at the Geometric Foundations of Gravity conference in Tartu in August 2024. 1 Introduction As is well known [1, 2, 3], ghost-free models of massive gravity were … cry tab

[1105.3735v2] Theoretical Aspects of Massive Gravity - arXiv.org

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Theoretical aspects of massive gravity

Aspects of massive spin-2 effective field theories - ORA - Oxford ...

Webb13 sep. 2004 · We briefly discuss what kind of cosmology can one expect in massive gravity and argue that the allowed values of the graviton mass may be quite large, …

Theoretical aspects of massive gravity

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Webbof massive gravity emerge from a higher-dimensional theory of general relativity, leading to the Dvali–Gabadadze–Porrati model (DGP), cascading gravity, and ghost-free massive gravity. We then explore their theoretical and phenomenological consistency, proving the absence of ... III Phenomenological Aspects of Ghost-free Massive Gravity 118 Webb7 maj 2012 · Massive gravity has seen a resurgence of interest due to recent progress which has overcome its traditional problems, yielding an avenue for addressing …

WebbThese are usually referred to as massive gravity, ... Edvard Mörtsell develops phenomenological aspects, and subsequent observational tests, ... He has worked extensively on theoretical problems involving black holes, including the black hole information paradox. His past work also includes boundary conformal field theory, ... Webb18 maj 2011 · Theoretical Aspects of Massive Gravity. Kurt Hinterbichler. Massive gravity has seen a resurgence of interest due to recent progress which has overcome its …

Webb1 okt. 2024 · In contrast to the standard theory of mass-varying massive gravity where the graviton mass asymptotically approaches zero at late times, hence making the contribution of massive gravity to the late-time cosmic expansion minimum, the MTMVMG can provide good descriptions both in the massless and massive sectors. Webb16 jan. 2014 · Massive Gravity Claudia de Rham We review recent progress in massive gravity. We start by showing how different theories of massive gravity emerge from a …

Webb27 maj 2013 · All theoretical MDA relations comprise one free parameter of the dimension of an acceleration, Milgrom's constant a_M. I find that the "simple mu" function provides a good fit to the data free of...

WebbTheoretical Aspects of Massive Gravity Kurt Hinterbichlera;1 a Center for Particle Cosmology, Department of Physics and Astronomy, University of Pennsylvania, 209 … crysys 2 torrentWebb1 jan. 2024 · Introduction: A brief account of massive gravity Black hole remnants are the stable or meta-stable end state of Hawking evaporation, in the sense that Hawking … dynamics gp this checkbook is not accessibleWebb18 maj 2011 · Massive gravity has seen a resurgence of interest due to the recent realization that its traditional problems may be overcome, yielding an avenue for … dynamics gp time matrixWebb13 apr. 2024 · Recent studies have revealed that the bending of light around massive galaxies is significantly smaller relative to theoretical expectations. This finding, the so-called lensing is low problem, has been interpreted as a breakdown of our cosmological model. Now, a team of scientists has found 1 that the mismatch between theory and … crytal bowls brian greenWebbRegular Article - Theoretical Physics Holographic aspects of a higher curvature massive gravity Shahrokh Parvizi1,a, Mehdi Sadeghi2,b 1 Department of Physics, School of Sciences, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, ... dynamics gp upgrade path 18.3.1290Webb15 juni 2024 · Einstein’s general theory of relativity correctly describes the behavior of gravity over close to 30 orders of magnitude, from submillimeter scales all the way up to cosmological distances. No other force of nature has been described with such precision and over such a variety of scales. cry tag lineWebbA unified theory embracing all physical phenomena is a major goal of theoretical physics. In the early 1980s, many physicists looked to eleven-dimensional supergravity in the hope that it might provide that elusive superunified theory. In 1984 supergravity was knocked off its pedestal by ten-dimensional superstrings, one-dimensional objects whose v dynamics gp upgrade 18.4