Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP04(2010)092
Keywords
Gauge-gravity correspondence; AdS-CFT Correspondence
Categories
Funding
- National Science Foundation [PHY05-51164]
- European Commission [MOIF-CT-2006-38381, MOIF-CT-2005-007300]
- FEDER
- Spanish DGI [FIS2007-62238]
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We introduce a simple generalization of the basic holographic superconductor model in which the spontaneous breaking of a global U(1) symmetry occurs via the Stuckelberg mechanism. This more general setting allows tuning features such as the order of the transition. The physical vacuum of the condensed phase and the order of the transition are determined by a detailed analysis of the free energy of the system. For first order transitions, we identify a metastable phase above the critical temperature. In this case, the conductivity shows additional poles, thus suggesting that the condensate has internal structure.
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