论文标题
磁场影响下的炭分解的配置熵描述
Configuration entropy description of charmonium dissociation under the influence of magnetic fields
论文作者
论文摘要
粒子加速器产生的重离子碰撞会导致形成新的物质状态，称为夸克gluon等离子体。不可能直接观察血浆，在该等离子体中，夸克和胶子不局限于哈德子。所有可用的信息都来自在强烈相互作用的强元后到达检测器的粒子。在这些颗粒中，发挥重要作用的颗粒是由$ c \ bar c $ quark抗夸克对制成的Charmonium j/$ψ$ heavy Meson。在重离子碰撞中产生的这种颗粒的比例与血浆引起的解离水平有关。另一方面，等离子体中$ j/ψ$的解离受到培养基的温度和密度以及在非中央碰撞中产生的磁场的存在。研究物理系统稳定性的一个非常有趣的工具是配置熵（CE）。近年来，文献中出现了各种物理系统中的许多例子，其中CE的增加与系统不稳定性的增加有关。在本文中，我们计算具有磁场背景的等离子体内部的炭的CE，以研究在这种情况下与热介质中的分离相对应的不稳定性，将其转化为CE对场的依赖性。
Heavy ion collisions, produced in particle accelerators, lead to the formation of a new state of matter, known as the quark gluon plasma. It is not possible to observe directly the plasma, where quarks and gluons are not confined into hadrons. All the available information comes from the particles that reach the detectors after the strongly interacting matter hadronizes. Among those particles, one that plays an important role is the charmonium J/$ψ$ heavy meson, made of a $ c \bar c$ quark anti-quark pair. The fraction of such particles produced in a heavy ion collision is related to the dissociation level caused by the plasma. On the other hand, the dissociation of $J/Ψ$ in the plasma is influenced by the temperature and the density of the medium and also by the presence of magnetic fields, that are produced in non central collisions. A very interesting tool to study stability of physical systems is the configuration entropy (CE). In recent years many examples in various kinds of physical systems appeared in the literature, where an increase in the CE is associated with an increase in the instability of the system. In this article we calculate the CE for charmonium quasistates inside a plasma with a magnetic field background, in order to investigate how the instability, corresponding in this case to the dissociation in the thermal medium, is translated into the dependence of the CE on the field.
