We give (sufficient) conditions for the extension of the cosmic no-hair conjecture to nonminimally coupled scalar-tensor theories in which the coupling is not given a priori. Furthermore, in a Friedman-Robertson-Walker spacetime, we get exact solutions for such theories using the so-called Noether symmetry approach. The results are interesting because we obtain behaviours able to avoid the initial singularity.
Nonminimal coupling and cosmic no-hair theorem / Capozziello, Salvatore; DE RITIS, Ruggiero; Scudellaro, Paolo. - In: PHYSICS LETTERS A. - ISSN 0375-9601. - STAMPA. - 188:(1994), pp. 130-136.
Nonminimal coupling and cosmic no-hair theorem
CAPOZZIELLO, SALVATORE;DE RITIS, RUGGIERO;SCUDELLARO, PAOLO
1994
Abstract
We give (sufficient) conditions for the extension of the cosmic no-hair conjecture to nonminimally coupled scalar-tensor theories in which the coupling is not given a priori. Furthermore, in a Friedman-Robertson-Walker spacetime, we get exact solutions for such theories using the so-called Noether symmetry approach. The results are interesting because we obtain behaviours able to avoid the initial singularity.File in questo prodotto:
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