外場に対するＱＣＤの振る舞い

外场中的 QCD 行为

基本信息

批准号：
14J05990
负责人：
モラレスロドリゲスパブロア
金额：
$ 1.79万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2014
资助国家：
日本
起止时间：
2014-04-25 至 2017-03-31
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14J05990/
关键词：
Particle production Quantum anomaly Leptogenesis Fluid dynamics Modified gravity Topology Anomalies Field theory Quark Gluon Plasma Heavy Ion Collisions numerical simulation particle production

项目摘要

1. Implications of the field-theoretic approach to the perfect fluid.Towards the end of the previous fiscal year a reformulation of the perfect fluid was developed. This time, we further expand on the consequences this formalism. Our field-theoretic description allows for the creation and annihilation of fluid itself even within the classical framework; for instance, some class of gauge coupling enables to describe the radiation and absorption of the gauge field accompanied by the change of the intrinsic-mass energy of fluid. We have found that the Lagrangian density governing the dynamics of the fluid contains four phases and incompressible states, two of which are stable. These novel phases are allowed without violation of causality and are discussed within the context of a two-fluid systems. Results were presented at COSMO-16 and are to be submitted for publication.2. Leptogenesis in Chern-Simons modified gravityIn this part, we concentrate on tests of dynamical Chern-Simons (CS) modified gravity, which is currently only weakly constrained by binary pulsar observations. dCS gravity has also been shown to lead to a theory with torsion, in the presence of fermions this torsion corrections result into new two-fermion point interactions. This interaction, mediated by the axial current, was studied in the problem of neutrino-antineutrino asymmetry during the inflationary period. The net particle per helicity was calculated and translated into baryon asymmetry, this quantity dependent on the theta-parameter is constrained by WMAP observations on baryogenesis, work in progress.

1.场论方法对完美流体的影响。在上一财年末，完美流体的重新配方被开发出来。这次，我们进一步阐述这种形式主义的后果。即使在经典框架内，我们的场论描述也允许流体本身的产生和湮灭；例如，某种类型的规范耦合能够描述规范场的辐射和吸收以及流体固有质量能量的变化。我们发现控制流体动力学的拉格朗日密度包含四个相和不可压缩状态，其中两个是稳定的。这些新颖的相是在不违反因果关系的情况下被允许的，并且在二流体系统的背景下进行讨论。结果已在 COSMO-16 上提交，并将提交出版。2．陈-西蒙斯修正引力中的轻子发生在这一部分中，我们集中于动力学陈-西蒙斯（CS）修正引力的测试，目前仅受到双脉冲星观测的弱约束。 dCS 引力也被证明可以产生扭转理论，在费米子存在的情况下，这种扭转校正会产生新的两个费米子点相互作用。这种由轴向电流介导的相互作用，在暴涨时期的中微子-反中微子不对称问题中进行了研究。计算每个螺旋度的净粒子并将其转换为重子不对称性，该数量取决于 theta 参数，并受到 WMAP 对重子发生的观测（正在进行的工作）的限制。