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Pseudogap and time reversal breaking in a holographic superconductor

2008; Springer Nature; Volume: 2008; Issue: 08 Linguagem: Inglês

10.1088/1126-6708/2008/08/035

1127-2236

Matthew M. Roberts, Sean A. Hartnoll,

Quantum Chromodynamics and Particle Interactions

Classical SU(2) Yang-Mills theory in 3+1 dimensional anti-de Sitter space is known to provide a holographic dual to a 2+1 system that undergoes a superconducting phase transition. We study the electrical conductivity and spectral density of an isotropic superconducting phase. We show that the theory exhibits a pseudogap at low temperatures and a nonzero Hall conductivity. The Hall conductivity is possible because of spontaneous breaking of time reversal symmetry.