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arXiv · 1303.5331

Ab Initio Calculation of Finite Temperature Charmonium Potentials

P. W. M. Evans·C. R. Allton·J. -I. Skullerud
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Abstract

The interquark potential in charmonium states is calculated for the first time in both the zero and non-zero temperature phases from a first-principles lattice QCD calculation. Simulations with two dynamical quark flavours were used with temperatures T in the range 0.4 T_c \lesssim T \lesssim 1.7 T_c, where T_c is the deconfining temperature. The correlators of point-split operators were analysed to gain spatial information about the charmonium states. A method, introduced by the HAL QCD collaboration and based on the Schroedinger equation, was applied to obtain the interquark potential. We find a clear temperature dependence, with the central potential becoming flatter (more screened) as the temperature increases.

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P. W. M. Evans, C. R. Allton, J. -I. Skullerud. 2013-03-21. Ab Initio Calculation of Finite Temperature Charmonium Potentials. https://doi.org/10.1103/physrevd.89.071502

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