Holographic subdiffusion
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Abstract We initiate a study of finite temperature transport in gapless and strongly coupled quantum theories with charge and dipole conservation using gauge-gravity duality. In a model with non-dynamical gravity, the bulk fields of our model include a suitable mixed-rank tensor which encodes the boundary multipole symmetry. We describe how such a theory can arise at low energies in a theory with a covariant bulk action. Studying response functions at zero density, we find that charge relaxes via a fourth-order subdiffusion equation, consistent with a recently-developed field-theoretic framework.
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2010 ◽
Vol 25
(34)
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pp. 2859-2872
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2015 ◽
Vol 24
(10)
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pp. 1530011
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2009 ◽
Vol 820
(1-4)
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pp. 9c-16c
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Keyword(s):
2015 ◽
Vol 30
(27)
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pp. 1530054
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