Analogue of the pole-skipping phenomenon in acoustic black holes

Abstract

The pole-skipping phenomenon is a special property of the retarded Green's function of black hole perturbations. We turn to its analog in acoustic black holes, which may relate to experiments. The frequencies of these special points are located at negative integer (imaginary) Matsubara frequencies $\omega =-i2\pi Tn$, which are consistent with the imaginary frequencies of quasinormal modes (QNMs). This implies that the lower-half plane pole-skipping phenomena have the same physical meaning as the imaginary part of QNMs, which represents the dissipation of perturbation of acoustic black holes and is related to the instability time scale of perturbation.

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• Pole skipping in holographic theories with gauge and fermionic fields
• Construction of bulk solutions for towers of pole-skipping points
• Entanglement entropy and Page curve from the $\mathcal{M}$-theory dual of thermal QCD above $T_c$ at intermediate coupling
• Pole-skipping in two-dimensional de Sitter spacetime and double-scaled SYK model
• Long-time tails in the SYK chain from the effective field theory with a large number of derivatives
• Fermionic greybody factors in Schwarzschild acoustic black holes
• Analogue metric in a black bounce background
• Quantum chaos in the presence of non-conformality
• Pole-skipping for massive fields and the Stueckelberg formalism