Mechanisms of QCD in an external magnetic field

在极端条件下强相互作用物质的新阶段是各种重离子碰撞实验的主题，例如在欧洲核子研究中心。下面的夸克和胶子的动力学是由量子色动力学（QCD）控制的，它必须在这些制度中进行非摄动处理。在晶格QCD框架内的数值模拟提供了高温和强磁场下的转变信息，这是近年来人们非常感兴趣的问题。本项目旨在结合分析方法和对晶格构型（具有物理夸克质量）的评估，详细分析外磁场作用下QCD的机制。从跃迁和手性磁效应的角度，重点研究了夸克本征模、Polyakov环和拓扑密度的行为，并从理论上更好地理解QCD作为一个强耦合系统。

New phases of strongly interacting matter under extreme conditions are the subject of various heavy ion collision experiments, for instance at CERN. The dynamics of the underlying quarks and gluons is governed by Quantum Chromodynamics (QCD), which has to be treated nonperturbatively in these regimes. Numerical simulations in the framework of lattice QCD provide information about the transition at high temperatures and in the presence of strong magnetic fields, which have become of great interest in recent years.The project aims at analyzing the mechanisms of QCD with external magnetic fields in detail, using a combination of analytic approaches and evaluations on lattice configurations (with physical quark masses). It focusses on the behavior of the quark eigenmodes, Polyakov loops and the topological density, in view of the transition and the Chiral magnetic effect as well as for a better theoretical understanding of QCD as a strongly coupled system.