Curvature Quintessence

By Salvatore Capozziello. 2002

941 citations recorded by the source corpus.

The issues of quintessence and cosmic acceleration can be discussed in the framework of higher order theories of gravity. We can deﬁne eﬀective pressure and energy density directly connected to the Ricci scalar of curvature of a generic fourth order theory and then ask for the conditions to get an accelerated expansion. Exact accelerated expanding solutions can be achieved for several fourth order theories so that we get an alterna-tive scheme to the standard quintessence scalar ﬁeld, minimally coupled to gravity, usually adopted. We discuss also conformal transformations in order to see the links of quintessence between the Jordan and Einstein frames.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/48614385dde1d307a3502953b736e07382a1f887

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

Citations in the corpus

Hybrid Metric-Palatini Gravity (2015, background): “Theories in which the gravitational action consists of more general combinations of curvature invariants than the pure Einstein-Hilbert term have been investigated with special emphasis [9–17].”