Moving doubly heavy baryon in a strongly coupled plasma via holography  

作　　者：Xuan Liu Jia-Jie Jiang Xun Chen Mitsutoshi Fujita Akira Watanabe 刘旋;江佳杰;陈勋

机构地区：[1]School of Nuclear Science and Technology,University of South China,Hengyang 421001,China [2]School of Mathematics and Physics,University of South China,Hengyang 421001,China

出　　处：《Chinese Physics C》2024年第8期42-55,共14页中国物理C（英文版）

基　　金：Supported by the Natural Science Foundation of Hunan Province,China(2022JJ40344);the Research Foundation of Education Bureau of Hunan Province,China(21B0402)。

摘　　要：Gauge/gravity duality is used to study the properties of the doubly heavy baryon(QQq)at finite rapidity and temperature in heavy-ion collisions.We investigate the impact of rapidity on string breaking and screening of QQq and compare these effects with the results for QQ¯in detail.Computations reveal that the string-breaking distances of QQq and QQ¯are close in the confined state,and the effects of rapidity and temperature on the string breaking are not significant.An interesting result shows that QQq cannot be determined at sufficiently high temperatures and rapidities.However,QQ¯can exist under any conditions as long as the separation distance is sufficiently small.Furthermore,the screening distances of QQq and QQ¯are compared at finite rapidity and temperature.Based on the above analysis,we infer that QQ¯is more stable than QQq at finite rapidity and temperature.

关 键 词：holographic QCD QGP heavy quark 

分 类 号：O53[理学—等离子体物理] O572.33[理学—物理]