Dark energy and the generalized second law

Germán Izquierdo, Diego Pavón

Research output: Contribution to journalArticleResearchpeer-review

229 Citations (Scopus)


We explore the thermodynamics of dark energy taking into account the existence of the observer's event horizon in accelerated universes. Except for the initial stage of Chaplygin gas dominated expansion, the generalized second law of gravitational thermodynamics is fulfilled and the temperature of the phantom fluid results positive. This substantially extends the work of Pollock and Singh [M.D. Pollock, T.P. Singh, Class. Quantum Grav. 6 (1989) 901] on the thermodynamics of super-inflationary expansion. © 2005 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)420-426
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number4-5
Publication statusPublished - 16 Feb 2006


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