Mechanisms of QCD in an external magnetic field

外部磁场中的 QCD 机制

• 批准号: 249103391
• 负责人: Dr. Falk Bruckmann
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/249103391?language=en
• 关键词: Mechanisms; QCD; external; magnetic; field

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.

极端条件下强相互作用物质的新相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由量子色动力学(QCD)控制，在这些区域中必须以非微扰方式处理。在晶格QCD框架下的数值模拟提供了关于高温和强磁场存在下的转变的信息，这是近年来引起人们极大兴趣的。该项目旨在结合解析方法和对晶格组态(与物理夸克质量)的评估，详细地分析QCD在外部磁场下的机制。从跃迁和手征磁效应的角度，着重讨论了夸克本征模、Polyakov环和拓扑密度的行为，以便更好地从理论上理解QCD是一个强耦合系统。