Abstract
The concept of a horizon known from general relativity describes the loss of causal connection and can be applied to non-gravitational scenarios such as out-of-equilibrium condensed-matter systems in the laboratory. This analogy facilitates the identification and possibly the experimental verification of exotic effects known from gravity and cosmology, such as Hawking radiation, as well as a unified description and better understanding of non-equilibrium phenomena in condensed matter systems. By means of several examples including general fiuid flows, dynamical quantum phase transitions, and expanding Bose-Einstein condensates, the concepts of event, particle, and apparent horizons will be discussed together with the resulting quantum effects.
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Schützhold, R. (2007). Effective Horizons in the Laboratory. In: Unruh, W.G., Schützhold, R. (eds) Quantum Analogues: From Phase Transitions to Black Holes and Cosmology. Lecture Notes in Physics, vol 718. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-70859-6_2
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