Thermal width of the Υ at large 't hooft coupling

Jorge Noronha, Adrian Dumitru

Research output: Contribution to journalArticlepeer-review


We use the anti-de Sitter/conformal field theory correspondence to show that the heavy quark (static) potential in a strongly coupled plasma develops an imaginary part at finite temperature. Thus, deeply bound heavy quarkonia states acquire a small nonzero thermal width when the 't Hooft coupling λ=g2Nc 1 and the number of colors Nc→ . In the dual gravity description, this imaginary contribution comes from thermal fluctuations around the bottom of the classical sagging string in the bulk that connects the heavy quarks located at the boundary. We predict a strong suppression of Υ's in heavy-ion collisions and discuss how this may be used to estimate the initial temperature.

Original languageEnglish (US)
Article number152304
JournalPhysical review letters
Issue number15
StatePublished - Oct 8 2009
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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