TY - JOUR

T1 - Holographic multi-band superconductor

AU - Huang, Ching Yu

AU - Lin, Feng Li

AU - Maity, Debaprasad

N1 - Funding Information:
We thank Chen-Pin Yeh for taking part in this project at its early stage. We also thank Juinn-Wei Chen, Christopher Herzog and Logan Wu for helpful discussions. This work is supported by Taiwanʼs NSC grant NSC-099-2811-M-003-007- , and partly by NCTS .

PY - 2011/9/26

Y1 - 2011/9/26

N2 - 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 MgB2. 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.

AB - 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 MgB2. 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.

KW - AdS/CFT

KW - Holographic superconductor

KW - Two-band superconductor

UR - http://www.scopus.com/inward/record.url?scp=80052408749&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052408749&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2011.08.053

DO - 10.1016/j.physletb.2011.08.053

M3 - Article

AN - SCOPUS:80052408749

SN - 0370-2693

VL - 703

SP - 633

EP - 640

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 5

ER -