论文标题

在Gluon冷凝存在下,夸克古夸克对的全息图像

Holographic imaginary potential of a quark antiquark pair in the presence of gluon condensation

论文作者

Tahery, Sara, Chen, Xurong, Zhang, Zi-qiang

论文摘要

对于在夸克gluon等离子体(QGP)中移动的重型夸克古夸克($ q \ bar {q} $),我们使用量规/重力二重性来研究潜力的真实和虚构部分(re $ v_ {q \ bar {q}}} $ v_ {q \ bar {q \ bar {q {q {q {q {q {q)复杂的电势来自Wilson循环,通过考虑Nambu-Goto全息弦的世界表的热波动。在两种情况下,我们计算RE $ v_ {q \ bar {q}} $和IM $ v_ {q \ bar {q}} $,在两种情况下,移动$ q \ bar {q} $ pair的轴是横向的,并且与等离子中的运动方向相对于其运动方向是平行的。使用Re $ $ v_ {q \ bar {q}} $的重归其化方案,我们发现GC的包含增加了解离长度,而速度迅速的效果相反。对于IM $ V_ {q \ bar {q}} $,我们观察到,考虑GC的效果,生成了IM $ V_ {q \ bar {q}} $,以减少Quarkonium分离,从而减少Quarkonium的分离,而快速性则具有相反的效果。特别是,随着GC的值在解剖阶段下降,IM $ V_ {Q \ bar {q}} $是针对较小的距离生成的,从而增强了Quarkonium解离,并且在高温下,GC几乎没有通过GC修改,与先前的入口力的发现一致。

For a moving heavy quark antiquark ($Q\bar{Q}$) in a quark gluon plasma (QGP), we use gauge/gravity duality to study both real and imaginary parts of the potential (Re$V_{Q\bar{Q}}$ and Im$V_{Q\bar{Q}}$ 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$V_{Q\bar{Q}}$ and Im$V_{Q\bar{Q}}$ in both cases where the axis of the moving $Q\bar{Q}$ pair is transverse and parallel with respect to its direction of movement in the plasma. Using the renormalization scheme for the Re$V_{Q\bar{Q}}$ , we find that the inclusion of GC increases the dissociation length while rapidity has the opposite effect. While for the Im$V_{Q\bar{Q}}$ , we observe that by considering the effect of GC, the Im$V_{Q\bar{Q}}$ 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$V_{Q\bar{Q}}$ 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.

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