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A new approach to the "cosmological constant" problem
1996zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Capozziello, Salvatore +2 more
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The Cosmological Constant Problems
2001The old cosmological constant problem is to understand why the vacuum energy is so small; the new problem is to understand why it is comparable to the present mass density. Several approaches to these problems are reviewed. Quintessence does not help with either; anthropic considerations offer a possibility of solving both.
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ON THE COSMOLOGICAL CONSTANT AND THE COSMIC COINCIDENCE PROBLEM
International Journal of Modern Physics A, 2002According to a recently proposed idea the indirectly observed negative pressure of our present universe might be explained by the trace anomaly of quantum chromo-dynamics (QCD) as a non-perturbative effect of quantum fields in curved space-times. Examining some of the consequences of the proposed mechanism for the cosmic evolution yields no apparent ...
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The Hierarchy Problem and the Cosmological Constant Problem Revisited
2018Foundations of physics 49(9), 915 - 971 (2019).
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Anthropic Approach to the Cosmological Constant Problems
International Journal of Theoretical Physics, 2003The notion ``anthropic principle'' is used for decades already for a large number of theories which have as their common property: They make use of the fact that an observation can be done only if an observer exists. In cosmology, this means, that one ``explains'' the initial conditions near the ``big bang'' by the additional condition that at present,
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The Cosmological Constant Problem in Brane-world Cosmology
EAS Publications Series, 2008It is shown that the cosmological constant problem in brane-world is different from the same problem in general relativity, essentially because the gauge fields fields contributing to the vacuum energy are confined to the brane-world, but the cosmological term propagates in the bulk.
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A Solution to the Cosmological Constant Problem in Two Time Dimensions
Journal of High Energy Physics Gravitation and Cosmology, 2020Christoph Köhn
exaly
IS THE COSMOLOGICAL CONSTANT A PROBLEM ?
The Tenth Marcel Grossmann Meeting, 2006openaire +1 more source
Quantum aspects of nonlocal approach to the cosmological constant problem
Physical Review D, 2017Ichiro Oda
exaly