We study non-flat Friedman-Robertson-Walker (FRW) cosmologies searching for Nöther symmetries in the pointlike Lagrangians derived from a general non-minimally coupled gravitational action. The presence of a quadratic coupling makes the dynamics degenerate if the spatial-curvature constant k is different from zero, while exact solutions, through the existence of the symmetry, are found in the minimally coupled case. © 1994 Società Italiana di Fisica.

Nöther's symmetries in non-flat cosmologies

Capozziello S.
;
Scudellaro P.
1994

Abstract

We study non-flat Friedman-Robertson-Walker (FRW) cosmologies searching for Nöther symmetries in the pointlike Lagrangians derived from a general non-minimally coupled gravitational action. The presence of a quadratic coupling makes the dynamics degenerate if the spatial-curvature constant k is different from zero, while exact solutions, through the existence of the symmetry, are found in the minimally coupled case. © 1994 Società Italiana di Fisica.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/890692
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 16
  • ???jsp.display-item.citation.isi??? ND
social impact