Seeing bulk perturbations in Lifshitz holography

Abstract

We introduce a perturbation $h_{\mu \nu }$ onto a background Lifshitz spacetime and examine some of its consequences. In particular, we consider a radially localized perturbation and compute the resulting holographic Green's function to linearized order. At leading order, the Lifshitz Green's function demonstrates suppression of spectral weight at low frequencies, and this feature allows bulk perturbations in the IR to be partially hidden from local boundary probes.

arXiv comment17 pages, 2 figures

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