Abstract
In this paper we consider the acoustic metric obtained from an Abelian Higgs model extended with higher derivative terms in the bosonic sector which describes an acoustic rotating black hole and analyze the phenomena of superresonance, analogue Aharonov-Bohm effect and absorption. We investigate these effects by computing the scalar wave scattering by a draining bathtub vortex and discuss the physical interpretation of higher derivative terms. Furthermore, we show that the absorption does not vanish as the draining parameter tends to zero.
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