Ab Initio Calculation of Finite Temperature Charmonium Potentials


Evans, P.W.M. and Allton, C.R. and Skullerud, J.-I. (2013) Ab Initio Calculation of Finite Temperature Charmonium Potentials. Working Paper. arXiv.org. (Unpublished)

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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 0.4Tc . T . 1.7Tc, where Tc 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 Schrodinger 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.

Item Type: Monograph (Working Paper)
Additional Information: Cite as: arXiv:1303.5331 [hep-lat] (or arXiv:1303.5331v1 [hep-lat] for this version). We acknowledge the support and infrastructure provided by the Trinity Centre for High Performance Computing and the IITAC project funded by the HEA under the Program for Research in Third Level Institutes (PRTLI) co-funded by the Irish Government and the European Union. The calculations have been carried out using CHROMA [30]. The work of CA and WE is carried as part of the UKQCD collaboration and the DiRAC Facility jointly funded by STFC, the Large Facilities Capital Fund of BIS and Swansea University. WE and CA are supported by STFC. CRA thanks the Galileo Galilei Institute for Theoretical Physics for hospitality and the INFN for support during the writing up of this work. We are very grateful to Gert Aarts, Sinya Aoki, Robert Edwards, Tetsuo Hatsuda, Balint Jo´o and Alexander Rothkopf for useful discussions.
Keywords: Calculation; Finite Temperature; Charmonium Potentials; lattice QCD calculation;
Academic Unit: Faculty of Science and Engineering > Mathematical Physics
Item ID: 4536
Depositing User: Dr. Jonivar Skullerud
Date Deposited: 02 Oct 2013 16:31
Publisher: arXiv.org
URI:

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