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Evans, P.W.M., Allton, Chris and Skullerud, Jon-Ivar (2014) Ab initio calculation of finite-temperature charmonium potentials. Physical Review D, 89 (071502). pp. 1-5. ISSN 1550-7998
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Abstract
The interquark potential in charmonium states is calculated in both the zero and nonzero temperature
phases from a first-principles lattice QCD calculation. Simulations with two dynamical quark flavors are
used with temperatures T in the range 0.4Tc ≲ T ≲ 1.7Tc, where Tc is the deconfining temperature. The
correlators of point-split operators are analyzed to gain spatial information about the charmonium states. A
method introduced by the HAL QCD Collaboration and based on the Schrödinger equation is applied to
obtain the interquark potential. We find a clear temperature dependence with the central potential agreeing
with the Cornell potential in the confined phase and becoming flatter (more screened) as the temperature
increases past the deconfining temperature. This is the first time the interquark potential has been calculated
for realistic quarks at finite temperature.
| Item Type: | Article |
|---|---|
| Additional Information: | 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 [31]. The work of C. R. A. and P.W. M. E. was carried out as part of the UKQCD Collaboration and the DiRAC Facility jointly funded by STFC, the Large Facilities Capital Fund of BIS and Swansea University. P.W.M. E. and C. R. A. are supported by STFC. C. R. A. thanks the Galileo Galilei Institute for Theoretical Physics for hospitality and the INFN for support during the writing of this work. We are very grateful to Gert Aarts, Sinya Aoki, Robert Edwards, Tetsuo Hatsuda, Balint Joó and Alexander Rothkopf for useful discussions. |
| Keywords: | Ab initio calculation; finite-temperature; charmonium potentials; lattice QCD calculation; |
| Academic Unit: | Faculty of Science and Engineering > Mathematical Physics |
| Item ID: | 5643 |
| Identification Number: | 10.1103/PhysRevD.89.071502 |
| Depositing User: | Dr. Jonivar Skullerud |
| Date Deposited: | 05 Jan 2015 17:09 |
| Journal or Publication Title: | Physical Review D |
| Publisher: | American Physical Society |
| Refereed: | Yes |
| Funders: | Higher Education Authority |
| Related URLs: | |
| URI: | https://mu.eprints-hosting.org/id/eprint/5643 |
| Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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