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Chinese Physics C > 2022, Vol. 46 > Issue(7): 073102 DOI: 10.1088/1674-1137/ac5db9

Studying the potential ofQQqat finite temperature in a holographic model

  • 1.

    School of Nuclear Science and Technology, University of South China, Hengyang 421001, China

  • 2.

    The Research Center for Theoretical Physics, Science School, Qingdao University of Technology, Qingdao 266033, China

  • 3.

    The Research Center of Theoretical Physics, Qingdao University of Technology, Qingdao 266033, China

  • Using gauge/gravity duality, we investigate the string breaking and dissolution of two heavy quarks coupled to a light quark at finite temperature. It is found that three configurations of QQqexist with the increase in separation distance for heavy quarks in the confined phase. Furthermore, string breaking occurs at the distance $ L_{QQq} = 1.27\; {\rm{fm}} $ ( $ T = 0.1\; {\rm{GeV}} $ ) for the decay mode $ {Q Q q} \rightarrow {Q q q+Q \bar{q}} $ . In the deconfined phase, QQqmelts at a certain distance and then becomes free quarks. Finally, we compare the potential of QQqwith that of $ {Q\bar{Q}} $ , and it is found that $ {Q\bar{Q}} $ is more stable than QQqat high temperatures.
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Xun Chen, Bo Yu, Peng-Cheng Chu and Xiao-hua Li. Studying the potential of QQq at finite temperature in a holographic model[J]. Chinese Physics C. doi: 10.1088/1674-1137/ac5db9
Xun Chen, Bo Yu, Peng-Cheng Chu and Xiao-hua Li. Studying the potential of QQq at finite temperature in a holographic model[J]. Chinese Physics C. doi:10.1088/1674-1137/ac5db9 shu
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Received: 2021-12-28
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    • 1.

      沈阳化工大学材料科学与工程学院 沈阳 110142

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