Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-12-27
Phys.Rev.D83:066013,2011
Physics
High Energy Physics
High Energy Physics - Theory
15 page,4 figures;Some refs added
Scientific paper
10.1103/PhysRevD.83.066013
We investigate the phase transitions of holographic p-wave superconductors in (4+1)-dimensional Einstein-Yang-Mills-Gauss-Bonnet theories, in a grand canonical ensemble. Turning on the back-reaction of the Yang-Mills field, it is found that the condensations of vector order parameter become harder if the Gauss-Bonnet coefficient grows up or the back-reaction becomes stronger. In particular, the vector order parameter exhibits the features of first order and second order phase transitions, while only the second order phase transition is observed in the probe limit. We discuss the roles that the Gauss-Bonnet term and the back-reaction play in changing the order of phase transition.
Cai Rong-Gen
Nie Zhang-Yu
Zhang Hai-Qing
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