The Penrose inequality and the fluid/gravity correspondence

Yaron Oz*, Michael Rabinovich

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Motivated by the fluid/gravity correspondence, we consider the Penrose inequality in the framework of fluid dynamics. In general relativity, the Penrose inequality relates the mass and the entropy associated with a gravitational background. If the inequality is violated by some Cauchy data, it suggests a creation of a naked singularity, thus providing means to consider the cosmic censorship hypothesis. The analogous inequality in the context of fluid dynamics can provide a valuable tool in the study of finite-time blowups in hydrodynamics. We derive the inequality for relativistic and nonrelativistic fluid flows in general dimension. We show that the inequality is always satisfied at the ideal fluid order. At the leading viscous order, the inequality may be violated by relativistic fluid flows, while it is always satisfied by nonrelativistic incompressible flows. The inequality may be violated at the next to leading viscous order by both relativistic and nonrelativistic flows.

Original languageEnglish
Article number70
JournalJournal of High Energy Physics
Issue number2
StatePublished - 2011


  • Gauge-gravity correspondence
  • Holography and quark-gluon plasmas


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