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Unimodular Approaches to the Cosmological Constant Problem
Universe, 2023 We review selected aspects of unimodular gravity and we discuss its viability as a solution of the old cosmological constant problem. In unimodular gravity, the cosmological constant is promoted to a global degree of freedom.
Pavel Jiroušek
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The Cosmological constant problem [PDF]
Contemporary Physics, 2004 URL: http://www-spht.cea.fr/articles/T03/162 (sur invitation).International audienceObservational evidence seems to indicate that the expansion of the universe is currently accelerating.
Brax, Philippe
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Gravitational Theory without the Cosmological Constant Problem [PDF]
Physical Review D, 1996 We develop the principle of nongravitating vacuum energy, which is implemented by changing the measure of integration from $\sqrt{-g}d^{D}x$ to an integration in an internal space of $D$ scalar fields $\phi_{a}$.
Guendelman, E. I., Kaganovich, A. B.
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A Solution to the Cosmological Constant Problem [PDF]
International Journal of Modern Physics D, 2005 According to general relativity, the present analysis shows on geometrical grounds that the cosmological constant problem is an artifact due to the unfounded link of this fundamental constant to vacuum energy density of quantum fluctuations.Comment: 7 ...
Triay, Roland
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Diluting solutions of the cosmological constant problem [PDF]
Modern Physics Letters A, 2003 We discuss the cosmological constant problem in the context of higher codimension brane world scenarios with infinite-volume extra dimensions.Comment: 11 pages, Revtex, reference ...
Alberto Iglesias +3 more
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Neutron Stars and the Cosmological Constant Problem [PDF]
Physical Review D, 2011 The gravitational aether theory is a modification of general relativity that decouples vacuum energy from gravity, and thus can potentially address the cosmological constant problem. The classical theory is distinguishable from general relativity only in
C. M. Will +4 more
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Revisiting the Cosmological Constant Problem within Quantum Cosmology [PDF]
Universe, 2020 A new perspective on the Cosmological Constant Problem (CCP) is proposed and discussed within the multiverse approach of Quantum Cosmology. It is assumed that each member of the ensemble of universes has a characteristic scale a that can be used as ...
Vesselin G. Gueorguiev, Andre Maeder
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The Solution Cosmological Constant Problem [PDF]
Journal of Modern Physics, 2019 The cosmological constant problem arises because the magnitude of vacuum energy density predicted by the Quantum Field Theory is about 120 orders of magnitude larger then the value implied by cosmological observations of accelerating
Foukzon, Jaykov
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On the cosmological constant problem
Physics Letters B, 2019 An additional variation of the Einstein-Hilbert action with respect to the Planck mass provides a constraint on the average Ricci scalar that prevents vacuum energy from gravitating. Consideration of the evolution of the inhomogeneous matter distribution
Lucas Lombriser
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Can Compactifications Solve the Cosmological Constant Problem?
Journal of Cosmology and Astroparticle Physics, 2016 Recently, there have been claims in the literature that the cosmological constant problem can be dynamically solved by specific compactifications of gravity from higher-dimensional toy models.
Hertzberg, Mark P., Masoumi, Ali
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