The excess of correlation and the apparent periodic distribution of galaxies found in some recent surveys suggest the existence of oscillating behaviours in the cosmic evolution. We search for periodic behaviours in cosmological models where the geometry is minimally and nonminimally coupled with a scalar field. Such solutions exist and depend upon the form of the coupling and of the potential of the field governing the dynamics but they are not always capable to provide a good fit of the data unless nonminimal coupling is invoked.

Apparently periodic universe

CAPOZZIELLO, SALVATORE;DE RITIS, RUGGIERO;LONGO, GIUSEPPE;RUBANO, CLAUDIO;SCUDELLARO, PAOLO
1994

Abstract

The excess of correlation and the apparent periodic distribution of galaxies found in some recent surveys suggest the existence of oscillating behaviours in the cosmic evolution. We search for periodic behaviours in cosmological models where the geometry is minimally and nonminimally coupled with a scalar field. Such solutions exist and depend upon the form of the coupling and of the potential of the field governing the dynamics but they are not always capable to provide a good fit of the data unless nonminimal coupling is invoked.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/162625
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