TY - JOUR

T1 - Role of the Gullstrand-Painlevè metric in acoustic black holes

AU - Del Campo, Sergio

AU - Herrera, Ramón

AU - Lepe, Samuel

AU - Saavedra, Joel

PY - 2008

Y1 - 2008

N2 - Analog models of general relativity have received great attention in the last few years, since it is believed that these models are shedding light on possible experimental verifications of some fundamental problems in black hole physics, such as the evaporation of black holes and semiclassical quantities. The idea of using supersonic acoustic flows as analog systems to mimic some properties of black hole physics was proposed for the first time by Unruh. The basis of the analogy between gravitational black hole and sonic black holes comes from considering the propagation of acoustic disturbances on a barotropic, inviscid, inhomogeneous, and irrotational (at least locally) fluid flow. It is well known, that the equation of motion for this acoustic disturbance (described by its velocity potential) is identical to the Klein-Gordon equation for a massless scalar field minimally coupled to gravity in a curved spacetime. In this letter, we discuss the role of the Gullstrand-Painlevè metric in acoustic geometry and the physical interpretation of these models.

AB - Analog models of general relativity have received great attention in the last few years, since it is believed that these models are shedding light on possible experimental verifications of some fundamental problems in black hole physics, such as the evaporation of black holes and semiclassical quantities. The idea of using supersonic acoustic flows as analog systems to mimic some properties of black hole physics was proposed for the first time by Unruh. The basis of the analogy between gravitational black hole and sonic black holes comes from considering the propagation of acoustic disturbances on a barotropic, inviscid, inhomogeneous, and irrotational (at least locally) fluid flow. It is well known, that the equation of motion for this acoustic disturbance (described by its velocity potential) is identical to the Klein-Gordon equation for a massless scalar field minimally coupled to gravity in a curved spacetime. In this letter, we discuss the role of the Gullstrand-Painlevè metric in acoustic geometry and the physical interpretation of these models.

UR - http://www.scopus.com/inward/record.url?scp=65249175670&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/134/1/012006

DO - 10.1088/1742-6596/134/1/012006

M3 - Article

AN - SCOPUS:65249175670

SN - 1742-6588

VL - 134

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

M1 - 012006

ER -