[institut] Seminar za geometriju - predavanje 25.09.2014.

[Odeljenje za mehaniku]

Postovane kolege,
prosledjujemo vam informaciju o sledecem predavanju na Seminaru "Geometrija,
obrazovanje i vizuelizacija sa primenama"
(Seminar on Geometry, Education and Visualization with Applications).
 
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Predavanje: 25.09.2014. 17.15 casova, sala 301f (MI)

Prof. Salvatore Capozziello, Università di Napoli “Federico II” and INFN
Sez. di Napoli, Italy

Title: Hamiltonian Dynamics and Symmetries in Extended Gravity
Cosmology

Abstrakt:
We discuss the Hamiltonian dynamics for cosmologies coming from
Extended Theories of Gravity. In particular, minisuperspace models are
taken into account searching for Noether symmetries. The existence of
conserved quantities gives selection rules 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 Extended Theories of Gravity and
is conformally preserved. Furthermore, the presence of Noether
symmetries allows a straightforward classification of singularities that
represent the points where the symmetry is broken. Examples for
nonminimally coupled and models are discussed.