Results 51 to 60 of about 7,599,029 (258)
Information Dark Energy Can Resolve the Hubble Tension and Is Falsifiable by Experiment
Entropy, 2022 We consider the role information energy can play as a source of dark energy. Firstly, we note that if stars and structure had not formed in the universe, elemental bits of information describing the attributes of particles would have exhibited properties
Michael Paul Gough
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AN ISSUE TO THE COSMOLOGICAL CONSTANT PROBLEM [PDF]
Gravitation and Astrophysics, 2006 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.
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Cosmological constant problem: deflation during inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 We argue that the discrepancy between the Planck mass scale and the observed value of the cosmological constant can be largely attenuated, if those quantities are understood as a result of effective, and thus scale-dependent, couplings. We exemplify this
F. Canales +3 more
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Conformal symmetry and the cosmological constant problem [PDF]
International Journal of Modern Physics D, 2018 We argue that when a theory of gravity and matter is endowed with (classical) conformal symmetry, the fine tuning required to obtain the cosmological constant at its observed value can be significantly reduced.
S. Lucat, T. Prokopec, B. Świeżewska
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Noncommutative approach to the cosmological constant problem [PDF]
Physical Review D, 2011 9 pages, 1 figure, version matching that published on ...
GARATTINI R, NICOLINI P
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Quantum vacuum energy in general relativity
European Physical Journal C: Particles and Fields, 2018 The paper deals with the scale discrepancy between the observed vacuum energy in cosmology and the theoretical quantum vacuum energy (cosmological constant problem).
Christian Henke
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Cosmological constant problems and their solutions [PDF]
, 2004 There are now two cosmological constant problems: (i) why the vacuum energy is so small and (ii) why it comes to dominate at about the epoch of galaxy formation. Anthropic selection appears to be the only approach that can naturally resolve both problems.
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CosMIn: THE SOLUTION TO THE COSMOLOGICAL CONSTANT PROBLEM [PDF]
International Journal of Modern Physics D, 2013 The current acceleration of the universe can be modeled in terms of a cosmological constant Λ. We show that the extremely small value of [Formula: see text], the holy grail of theoretical physics, can be understood in terms of a new, dimensionless, conserved number Cosmic Mode Index (CosMIn), which counts the number of modes crossing the Hubble radius
Padmanabhan, Hamsa, Padmanabhan, T.
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Quantum Theory, Noncommutative Gravity, and the Cosmological Constant Problem
Advances in Astronomy, 2009 The cosmological constant problem is principally concerned with trying to understand how the zero-point energy of quantum fields contributes to gravity. Here we take the approach that by addressing a fundamental unresolved issue in quantum theory, we can
T. P. Singh
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Tackling the cosmological constant problem with scalar-tensor dark energy [PDF]
The Universe is expanding, and its expansion is accelerating according to observations. The simplest explanation for this is Einstein’s Cosmological Constant, which provides a negative pressure against gravitational instability. However, the Cosmological
Khan, Arnaz
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