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Advances in High Energy Physics
Volume 2015, Article ID 134815, 8 pages
Research Article

Phase Transition of the Higher Dimensional Charged Gauss-Bonnet Black Hole in de Sitter Spacetime

1Department of Physics, Shanxi Datong University, Datong 037009, China
2Institute of Theoretical Physics, Shanxi Datong University, Datong 037009, China

Received 26 November 2014; Revised 21 February 2015; Accepted 23 February 2015

Academic Editor: Chao-Qiang Geng

Copyright © 2015 Meng-Sen Ma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


We study the phase transition of charged Gauss-Bonnet-de Sitter (GB-dS) black hole. For black holes in de Sitter spacetime, there is not only black hole horizon, but also cosmological horizon. The thermodynamic quantities on both horizons satisfy the first law of the black hole thermodynamics, respectively; moreover, there are additional connections between them. Using the effective temperature approach, we obtained the effective thermodynamic quantities of charged GB-dS black hole. According to Ehrenfest classification, we calculate some response functions and plot their figures, from which one can see that the spacetime undergoes a second-order phase transition at the critical point. It is shown that the critical values of effective temperature and pressure decrease with the increase of the value of GB parameter .