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- W2258366989 abstract "We propose a new system suitable for studying analogue gravity effects, consisting of a gas flowing in a duct with a compliant wall. Effective transonic flows are obtained from uniform, low Mach number flows through the reduction of the one-dimensional speed of sound induced by the wall compliance. We show that the modified equation for linear perturbations can be written in a Hamiltonian form. We perform a one-dimensional reduction consistent with the canonical formulation, and deduce the analogue metric along with the first dispersive term. In a weak dispersive regime, the spectrum emitted from a sonic horizon is numerically shown to be Planckian, and with a temperature fixed by the analogue surface gravity." @default.
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- W2258366989 date "2015-10-21" @default.
- W2258366989 modified "2023-10-12" @default.
- W2258366989 title "Slow sound in a duct, effective transonic flows, and analog black holes" @default.
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- W2258366989 doi "https://doi.org/10.1103/physrevd.92.081503" @default.
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