1. On the Possibility of a Static Universe.
- Author
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Fabris, Júlio C., Falciano, Felipe T., Guimarães, Luiz F., and Pinto-Neto, Nelson
- Subjects
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EXPANDING universe , *COSMOLOGICAL constant , *POSSIBILITY , *PHYSICAL cosmology ,UNIVERSE - Abstract
After a century of cosmological observations, we have a solid standard model of cosmology. However, from a theoretical viewpoint, it is a compelling question if the cosmological data inevitably require an expanding universe independently of the theoretical framework. The possibility of obtaining a viable cosmological model with a constant scale-factor is discussed in the context of the Brans–Dicke class of scalar–tensor theories. It is shown that a flat spatial section requires the presence of a stiff matter fluid. However, some kinematical properties of the standard cosmological model can be reproduced. A realistic scenario may require a more complex class of scalar–tensor theories. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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