Analogue black holes in relativistic BECs: Mimicking Killing and universal horizons
PHYSICAL REVIEW D(2016)
摘要
Relativistic Bose-Einstein condensates (rBECs) have recently become a well-established system for analogue gravity. Indeed, while such relativistic systems cannot be yet realized experimentally, they provide an interesting framework for mimicking metrics for which no analogue is yet available, thus paving the way for further theoretical and numerical explorations. In this vein, we here discuss black holes in rBECs and explore how their features relate to the bulk properties of the system. We then propose the coupling of external fields to the rBEC as a way to mimic nonmetric features. In particular, we use a Proca field to simulate an aether field, as found in Einstein-aether or Ho. rava-Lifshitz gravity. This allows us to mimic a universal horizon, the causal barrier relevant for superluminal modes in these modified gravitational theories.
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关键词
relativistic becs,black holes
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