https://doi.org/10.1140/epjc/s10052-014-3256-x
Regular Article - Theoretical Physics
Holographic dark energy models and higher order generalizations in dynamical Chern–Simons modified gravity
1
Department of Physics, University of Trieste, Trieste, Italy
2
Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, SP, 09210-170, Brazil
3
International School for Advanced Studies (SISSA), Via Bonomea 265, 34136, Trieste, Italy
4
Pailan College of Management and Technology, Bengal Pailan Park, Kolkata, 700 104, India
* e-mail: roldao.rocha@ufabc.edu.br
Received:
25
July
2014
Accepted:
24
December
2014
Published online:
3
February
2015
Dark energy models are here investigated and studied in the framework of the Chern–Simons modified gravity model. We bring into focus the holographic dark energy model with Granda–Oliveros cut-off, the modified holographic Ricci dark energy model and a model with higher derivatives of the Hubble parameter. The relevant expressions of the scale factor 
for a Friedmann–Robertson–Walker Universe are derived and studied, and, in this context, the evolution of the scale factor is shown to be similar to the one displayed by the modified Chaplygin gas in two of the above models.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
