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arXiv 1809.04409hep-ph
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热行为、纠缠熵和部分子分布

Thermal behavior, entanglement entropy and parton distributions

X. Feal, C. Pajares, R. A. Vazquez

摘要:

强子碰撞中产生的粒子的表观热化可以通过快硬碰撞产生的初态部分子的量子纠缠来获得。硬碰撞的尺度与热温度有关。由于这些事件的概率分布具有$np(n)$的形式,因此,冯诺伊曼熵大于最小偏差情况。对这个熵的主要贡献来自部分子数的对数$n$,所有部分子的概率相等,使得熵最大。此外,还有另一个贡献与部分子多重数的宽度有关。渐近地,纠缠熵变为$\sqrt{n}$的对数,表明微观态的数量随着能量从$n$到$\sqrt{n}$而变化。

英文摘要:

The apparent thermalization of the particles produced in hadronic collisions can be obtained by quantum entanglement of the partons of the initial state once a fast hard collision is produced. The scale of the hard collision is related to the thermal temperature. As the probability distribution of these events is of the form $np(n)$, as a consequence, the von Neumann entropy is larger than in the minimum bias case. The leading contribution to this entropy comes from the logarithm of the number of partons $n$, all with equal probability, making maximal the entropy. In addition there is another contribution related to the width of the parton multiplicity. Asymptotically, the entanglement entropy becomes the logarithm of $\sqrt{n}$, indicating that the number of microstates changes with energy from $n$ to $\sqrt{n}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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