Survey of analogue spacetimes
arXiv:1206.2397 · doi:10.1007/978-3-319-00266-8_2
Abstract
Analogue spacetimes, (and more boldly, analogue models both of and for gravity), have attracted significant and increasing attention over the last decade and a half. Perhaps the most straightforward physical example, which serves as a template for most of the others, is Bill Unruh's model for a dumb hole, (mute black hole, acoustic black hole), wherein sound is dragged along by a moving fluid --- and can even be trapped behind an acoustic horizon. This and related analogue models for curved spacetimes are useful in many ways: Analogue spacetimes provide general relativists with extremely concrete physical models to help focus their thinking, and conversely the techniques of curved spacetime can sometimes help improve our understanding of condensed matter and/or optical systems by providing an unexpected and countervailing viewpoint. In this introductory chapter, I shall provide a few simple examples of analogue spacetimes as general background for the rest of the contributions.
V1: 25 pages. Draft of a chapter submitted to the proceedings of the IX'th SIGRAV graduate school: Analogue Gravity, Lake Como, Italy, May 2011. V2: 7 additional references
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Cited by in corpus (14)
- The exponential metric represents a traversable wormhole
- Thermality of the Hawking flux
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- Entropy/information flux in Hawking radiation
- On burning a lump of coal
- Unit-lapse versions of the Kerr spacetime
- Darboux diagonalization of the spatial 3-metric in Kerr spacetime
- Towards a Gordon form of the Kerr spacetime
- Bespoke analogue space-times: Meta-material mimics
- Multi-partite analysis of average-subsystem entropies
- Demystifying the Holographic Mystique
- Boyer-Lindquist space-times and beyond: Meta-material analogues
- Nonstationary analogue black holes
- Accelerating imperfect fluid