scholarly journals Can the quantum vacuum fluctuations really solve the cosmological constant problem?

2020 ◽  
Vol 80 (1) ◽  
Author(s):  
Gabriel R. Bengochea ◽  
Gabriel León ◽  
Elias Okon ◽  
Daniel Sudarsky
Keyword(s):  
Cosmological Constant ◽  
Quantum Fluctuations ◽  
Quantum Vacuum ◽  
Vacuum Fluctuations ◽  
Cosmological Constant Problem ◽  
Correct Reading ◽  
Self Consistency

AbstractRecently it has been argued that a correct reading of the quantum fluctuations of the vacuum could lead to a solution to the cosmological constant problem. In this work we critically examine such a proposal, finding it questionable due to conceptual and self-consistency problems, as well as issues with the actual calculations. We conclude that the proposal is inadequate as a solution to the cosmological constant problem.

scholarly journals A SOLUTION TO THE COSMOLOGICAL CONSTANT PROBLEM

2005 ◽  
Vol 14 (10) ◽  
pp. 1667-1673 ◽  
Author(s):  
ROLAND TRIAY
Keyword(s):  
General Relativity ◽  
Energy Density ◽  
Cosmological Constant ◽  
Vacuum Energy ◽  
Fundamental Constant ◽  
Quantum Fluctuations ◽  
Vacuum Energy Density ◽  
Cosmological Constant Problem

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.

scholarly journals On the gravitational field of a point-like body immersed in a quantum vacuum

2019 ◽  
Vol 491 (4) ◽  
pp. 4816-4828 ◽  
Author(s):  
Dragan Slavkov Hajdukovic
Keyword(s):  
Gravitational Field ◽  
Weak Interactions ◽  
Opposite Sign ◽  
Gravitational Acceleration ◽  
Quantum Vacuum ◽  
Vacuum Fluctuations ◽  
Additional Source ◽  
Cosmological Constant Problem ◽  
Maximal Magnitude ◽  
Gravitational Dipoles

ABSTRACT Quantum vacuum and the matter immersed in it interact through electromagnetic, strong and weak interactions. However, we have zero knowledge of the gravitational properties of the quantum vacuum. As an illustration of the possible fundamental gravitational impact of the quantum vacuum, we study the gravitational field of an immersed point-like body. This is done under the working hypothesis, that quantum vacuum fluctuations are virtual gravitational dipoles (i.e. two gravitational charges of the same magnitude but opposite sign); coincidentally, this hypothesis makes quantum vacuum free of the cosmological constant problem. The major result is that a point-like body creates a halo of polarized quantum vacuum around itself, which acts as an additional source of gravity. There is a maximal magnitude ${g_{\rm qv\max}}$ of gravitational acceleration that can be caused by a polarized quantum vacuum; the small size of this magnitude (${g_{\rm qv\max}} < 6\ \times {10^{ - 11}}\,\mathrm{ m\,s}{^{-2}}$) is the reason why in some cases (for instance within the Solar system) the quantum vacuum can be neglected. Advanced experiments at CERN and forthcoming astronomical observations will reveal if this is true or not, but we point to already existing empirical evidence that seemingly supports this fascinating possibility.

scholarly journals Can the fluctuations of the quantum vacuum solve the cosmological constant problem?

2018 ◽  
Vol 98 (6) ◽  
Author(s):  
Samuel S. Cree ◽  
Tamara M. Davis ◽  
Timothy C. Ralph ◽  
Qingdi Wang ◽  
Zhen Zhu ◽  
...  
Keyword(s):  
Cosmological Constant ◽  
Quantum Vacuum ◽  
Cosmological Constant Problem

Cosmological constant

2018 ◽  
Author(s):  
Michael Kachelriess
Keyword(s):  
Dark Energy ◽  
Cosmological Constant ◽  
Accelerated Expansion ◽  
Vacuum Fluctuations ◽  
Present Epoch ◽  
Modify Gravity ◽  
Expansion Of The Universe ◽  
The Universe

The contribution of vacuum fluctuations to the cosmological constant is reconsidered studying the dependence on the used regularisation scheme. Then alternative explanations for the observed accelerated expansion of the universe in the present epoch are introduced which either modify gravity or add a new component of matter, dubbed dark energy. The chapter closes with some comments on attempts to quantise gravity.

scholarly journals Bootstrapped Newtonian Cosmology and the Cosmological Constant Problem

Symmetry ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 358
Author(s):  
Roberto Casadio ◽  
Andrea Giusti
Keyword(s):  
Black Holes ◽  
Cosmological Constant ◽  
Quantum Cosmology ◽  
Quantum Physics ◽  
Gravitational Interaction ◽  
Newtonian Gravity ◽  
Cosmological Constant Problem ◽  
Newtonian Cosmology ◽  
Natural Solution ◽  
The Impact

Bootstrapped Newtonian gravity was developed with the purpose of estimating the impact of quantum physics in the nonlinear regime of the gravitational interaction, akin to corpuscular models of black holes and inflation. In this work, we set the ground for extending the bootstrapped Newtonian picture to cosmological spaces. We further discuss how such models of quantum cosmology can lead to a natural solution to the cosmological constant problem.

scholarly journals TIME, VACUUM ENERGY, AND THE COSMOLOGICAL CONSTANT

2009 ◽  
Vol 18 (14) ◽  
pp. 2265-2268 ◽  
Author(s):  
VIQAR HUSAIN
Keyword(s):  
Quantum Gravity ◽  
Cosmological Constant ◽  
Vacuum Energy ◽  
Cosmological Constant Problem ◽  
Problem Of Time ◽  
The Relationship

We describe a link between the cosmological constant problem and the problem of time in quantum gravity. This arises from examining the relationship between the cosmological constant and vacuum energy in light of nonperturbative formulations of quantum gravity.

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