Quintessence without scalar fields

By Salvatore Capozziello, Sante Carloni, Antonio Troisi. 2003

555 citations recorded by the source corpus.

The issues of quintessence and cosmic acceleration can be discussed in the framework of theories which do not include necessarily scalar fields. It is possible to define pressure and energy density for new components considering effective theories derived from fundamental physics like the extended theories of gravity or simply generalizing the state equation of matter. Exact accelerated expanding solutions can be achieved in several schemes: either in models containing higher order curvature and torsion terms or in models where the state equation of matter is corrected by a second order Van der Waals terms. In this review, we present such new approaches and compare them with observations.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c28012fc146c962c04091aa69b41cb44cfb7b473

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

In Nuclear and High Energy Physics

Citations in the corpus

f(R) Theories Of Gravity (2008, background): “It is quite straightforward to calculate weff as a function of n if the scale factor is assumed to be a generic power law a(t) = a0(t/t0) α (a general a(t) would lead to a time dependent weff ) (Capozziello et al., 2003).”
Modified Gravity and Cosmology (2011, background): “exact solution for a spatially flat vacuum FLRW solution is known to be given by [241]”
Bouncing cosmology in f(Q) symmetric teleparallel gravity (2020, background): “Solution for this issue might be found in extensions and modifications of GR action, according to which dark energy and dark matter can be addressed as curvature effects at astrophysical and cosmological scales [7–12].”
f(R) Theories (2010, methodology): “Originally the model f(R) = R − α/R (α > 0, n > 0) was proposed to explain the late-time cosmic acceleration [113, 120, 114, 143] (see also [456, 559, 17, 223, 212, 16, 137, 62] for related works).”