Abstract
We implement the effects of disorder on a holographic p-wave superconductor by introducing a random chemical potential which defines the local energy of the charge carriers. Since there are various possibilities for the orientation of the vector order parameter, we explore the behavior of the condensate in the parallel and perpendicular directions to the introduced disorder. We clarify the nature of various branches representing competing solutions and construct the disordered phase diagram. We find that moderate disorder enhances superconductivity as determined by the value of the condensate. Though we mostly focus on uncorrelated noise, we also consider a disorder characterized by its spectral properties and study in detail its influence on the spectral properties of the condensate and charge density. We find fairly universal responses of the resulting power spectra characterized by linear functions of the disorder power spectrum.
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Areán, D., Farahi, A., Pando Zayas, L.A. et al. Holographic p-wave superconductor with disorder. J. High Energ. Phys. 2015, 46 (2015). https://doi.org/10.1007/JHEP07(2015)046
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DOI: https://doi.org/10.1007/JHEP07(2015)046