Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-02-04
Phys.Lett.B703:633-640,2011
Physics
High Energy Physics
High Energy Physics - Theory
13 pages, 5 figures, v2. Major revision on the identification of U(1)_EM for evaluating the holographic conductivity in sec. 4
Scientific paper
10.1016/j.physletb.2011.08.053
We propose a gravity dual for the holographic superconductor with multi-band carriers. Moreover, the currents of these carriers are unified under a global flavored SO(3) symmetry, which is dual to the bulk SO(3) gauge symmetry. We study the phase diagram of our model, and find it qualitatively agrees with the one for the realistic 2-band superconductor, such as $MgB_2$. We also identify the bulk field dual to the electromagnetic $U(1)_{EM}$ current, which should be invariant under the global flavored SO(3) rotation. We then evaluate the corresponding holographic conductivity and find the expected mean field like behaviors.
Huang Ching-Yu
Lin Feng-Li
Maity Debaprasad
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