1. Holographic imaginary potential of a quark antiquark pair in the presence of gluon condensation.
- Author
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Tahery, Sara, Chen, Xurong, and Zhang, Zi-qiang
- Subjects
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QUARKS , *QUARKONIUMS , *QUARK-gluon plasma , *DUALITY (Nuclear physics) , *CONDENSATION , *HIGH temperatures , *RENORMALIZATION (Physics) - Abstract
For a moving heavy quark antiquark (QQ) in a quark gluon plasma (QGP), we use gauge/gravity duality to study both real and imaginary parts of the potential (Re V Q Q ¯ and Im V Q Q ¯ respectively) in a gluon condensate (GC) theory. The complex potential is derived from the Wilson loop by considering the thermal fluctuations of the worldsheet of the Nambu-Goto holographic string. We calculate Re V Q Q ¯ and Im V Q Q ¯ in both cases where the axis of the moving Q Q ¯ pair is transverse and parallel with respect to its direction of movement in the plasma. Using the renormalization scheme for the Re V Q Q ¯ , we find that the inclusion of GC increases the dissociation length while rapidity has the opposite effect. While for the Im V Q Q ¯ , we observe that by considering the effect of GC, the Im V Q Q ¯ is generated for larger distance thus decreasing quarkonium dissociation, while rapidity has opposite effect. In particular, as the value of GC decreases in the deconfined phase, the Im V Q Q ¯ is generated for smaller distance thus enhancing quarkonium dissociation, and at high temperatures it is nearly not modified by GC, consistent with previous findings of the entropic force. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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