Analogue Gravity

Analogue Gravity

12 May 2011 | Carlos Barceló, Stefano Liberati, Matt Visser
Analogue gravity is a research program that investigates gravitational fields within other physical systems, particularly condensed matter systems, to gain insights into general relativity and quantum field theory on curved spacetime. The review article by Carlos Barceló, Stefano Liberati, and Matt Visser covers the history, aims, results, and future prospects of analogue models. It begins with a simple example of acoustics in a moving fluid, which can generate an "acoustic black hole" and demonstrate phononic Hawking radiation. The article discusses the rich history and complex tapestry of models, highlighting the recent sustained development of analogue gravity ideas, with hundreds of published articles, a workshop, and two books. Future prospects are promising, both experimentally and theoretically, with potential applications in quantum gravity. The review also delves into the geometrical and physical acoustics approaches, the general features of the acoustic metric, and the concepts of horizons, ergo-regions, and surface gravity.Analogue gravity is a research program that investigates gravitational fields within other physical systems, particularly condensed matter systems, to gain insights into general relativity and quantum field theory on curved spacetime. The review article by Carlos Barceló, Stefano Liberati, and Matt Visser covers the history, aims, results, and future prospects of analogue models. It begins with a simple example of acoustics in a moving fluid, which can generate an "acoustic black hole" and demonstrate phononic Hawking radiation. The article discusses the rich history and complex tapestry of models, highlighting the recent sustained development of analogue gravity ideas, with hundreds of published articles, a workshop, and two books. Future prospects are promising, both experimentally and theoretically, with potential applications in quantum gravity. The review also delves into the geometrical and physical acoustics approaches, the general features of the acoustic metric, and the concepts of horizons, ergo-regions, and surface gravity.
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Understanding Analogue Gravity