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/lp/american-physical-society-aps/potential-models-and-lattice-gauge-current-current-correlators-cKm14ilUEM
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- Publisher
- American Physical Society (APS)
- Copyright
- Copyright © 2007 The American Physical Society
- ISSN
- 1550-2368
- DOI
- 10.1103/PhysRevD.75.034505
- Publisher site
- See Article on Publisher Site
Abstract
We compare current-current correlators in lattice gauge calculations with correlators in different potential models, for a pseudoscalar charmonium in the quark-gluon plasma. An important ingredient in the evaluation of the current-current correlator in the potential model is the basic principle that, out of the set of continuum states, only resonance states and Gamow states with lifetimes of sufficient magnitudes can propagate as composite objects and can contribute to the current-current correlator. When the contributions from the bound states and continuum states are properly treated, the potential model current-current correlators obtained with the potential proposed by Wong Phys. Rev. C 72 , 034906 ( 2005 ) PRVCAN 0556-2813 10.1103/PhysRevC.72.034906 are consistent with the lattice gauge correlators. The proposed potential model thus gains support to be a useful tool to complement lattice gauge calculations for the study of Q Q ¯ states at high temperatures.
Journal
Physical Review D – American Physical Society (APS)
Published: Feb 1, 2007