@article{dc33b34163e84afd9e3f137ab931fce1,
title = "H(z) diagnostics on the nature of dark energy",
abstract = "The two dominant components of the cosmic budget today, pressureles matter and dark energy, may or may not be interacting with each other. Currently, both possibilities appear compatible with observational data. We propose several criteria based on the history of the Hubble factor that can help discern whether they are interacting and whether dark energy is phantom or quintessence in nature.",
keywords = "Dark energy, dark matter",
author = "{Del Campo}, Sergio and Ram{\'o}n Herrera and Diego Pav{\'o}n",
note = "Funding Information: Thanks are due to the anonymous refreee and Fernando Atrio-Barandela for constructive comments and criticisms on a earlier draft of this paper, and Eric Linder and Craig Hogan for drawing our attention to Refs. 23 and 24, respectively. This work was supported from “Comisi{\'o}n Nacional de Ciencias y Tecnolog{\'i}a” (Chile) through the FONDECYT Grant No. 1070306 (SdC) and No. 1090613 (RH). D. P.{\textquoteright}s acknowledges “FONDECYT-Concurso incentivo a la cooperi{\'o}n internacional” No. 7100025, and is grateful to the “Instituto de F{\'i}sica” for warm hospitality; also D. P.{\textquoteright}s research was partially supported by the “Ministerio Espa{\~n}ol de Educaci{\'o}n y Ciencia” under Grant No. FIS2006-12296-C02-01.",
year = "2011",
month = apr,
doi = "10.1142/S0218271811018871",
language = "English",
volume = "20",
pages = "561--579",
journal = "International Journal of Modern Physics D",
issn = "0218-2718",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "4",
}