Causality and the speed of sound

G. Ellis, Roy Maartens, M. MacCallum

Research output: Contribution to journalArticlepeer-review

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Abstract

A usual causal requirement on a viable theory of matter is that the speed of sound be at most the speed of light. In view of various recent papers querying this limit, the question is revisited here. We point to various issues confronting theories that violate the usual constraint.
Original languageEnglish
Pages (from-to)1651-1660
Number of pages10
JournalGeneral Relativity and Gravitation
Volume39
Issue number10
DOIs
Publication statusPublished - 2007

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