Thermal Width of the UPSILON at Large 't Hooft Coupling
- Department of Physics, Columbia University, 538 West 120 Street, New York, New York 10027 (United States)
- Department of Natural Sciences, Baruch College, CUNY, 17 Lexington Avenue, New York, New York 10010 (United States)
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 lambda=g{sup 2}N{sub c}>>1 and the number of colors N{sub c}->infinity. 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 UPSILON's in heavy-ion collisions and discuss how this may be used to estimate the initial temperature.
- OSTI ID:
- 21370738
- Journal Information:
- Physical Review Letters, Vol. 103, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.103.152304; (c) 2009 The American Physical Society; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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