Einstein equations with fluctuating volume

Einstein equations with fluctuating volume We develop a simple model for a study of classical fields in the background of a fluctuating spacetime volume. It is applied for a formulation of the Einstein equations with a perfect-fluid source. We investigate the particular case of a Friedmann-Lemaître-Robertson-Walker cosmology and show that the resulting field equations can lead to solutions which avoid the initial Big Bang singularity. By interpreting the fluctuations as a result of the presence of quantum spacetime, we conclude that classical singularities can be avoided even within a semiclassical model that includes quantum effects in a very simple manner. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Gravitation and Cosmology Springer Journals

Einstein equations with fluctuating volume

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Publisher
Pleiades Publishing
Copyright
Copyright © 2017 by Pleiades Publishing, Ltd.
Subject
Physics; Classical and Quantum Gravitation, Relativity Theory; Astronomy, Observations and Techniques; Astrophysics and Astroparticles; Quantum Physics
ISSN
0202-2893
eISSN
1995-0721
D.O.I.
10.1134/S0202289317030033
Publisher site
See Article on Publisher Site

References

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