EPJ Web of Conferences
Volume 58, 2013TM 2012 – The Time Machine Factory [unspeakable, speakable] on Time Travel in Turin
|Number of page(s)||10|
|Section||The Spacetime Machine: Traveling from Micro to Macro Events|
|Published online||05 September 2013|
Time Solutions and Symmetries in Extended Gravity Quantum Cosmology
1 Dipartimento di Scienze Fisiche, Università di Napoli Federico II
2 INFN sez. di Napoli Compl. Univ. di Monte S. Angelo, Edificio G, Via Cinthia, I-80126 – Napoli, Italy
Published online: 5 September 2013
Minisuperspace models are taken into account searching for Noether symmetries. The existence of conserved quantities gives selection rule to recover classical behaviors in cosmic evolution according to the so called Hartle criterion, that allows to select correlated regions in the configuration space of dynamical variables. We show that such a statement works for general classes of gravity theories. Examples for nonminimally coupled and higher-order models are discussed.
© Owned by the authors, published by EDP Sciences, 2013
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