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arXiv 1011.4261hep-th
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低自旋反常共形流和阴影场的规范不变量方法

Gauge invariant approach to low-spin anomalous conformal currents and shadow fields

R. R. Metsaev

摘要:

研究了四维平坦时空中的共形低自旋反常电流和阴影场。规范不变制定这样的电流和阴影领域的发展。规范对称性是通过涉及Stueckelberg和辅助场来实现的。得到了反常电流和阴影场的规范不变微分约束以及整体共形对称的实现。此外,还得到了反常阴影场的规范不变两点顶点。在Stueckelberg规范框架中,这些规范不变顶点成为CFT的标准两点顶点。导出了反常阴影场的光锥规范两点顶点。本文研究了反常流和阴影场的AdS/CFT对应以及大质量低自旋AdS场的相应的归一化解和非归一化解。在修正的de Donder规范下考虑体场,导出解耦的运动方程。我们证明了体质量场剩余的壳层规范对称性对应于边界异常电流和阴影场的规范对称性,而体质量场的修正的(Lorentz)de Donder规范条件对应于边界异常电流和阴影场的微分约束.

英文摘要:

Conformal low-spin anomalous currents and shadow fields in flat space-time of dimension greater than or equal to four are studied. Gauge invariant formulation for such currents and shadow fields is developed. Gauge symmetries are realized by involving Stueckelberg and auxiliary fields. Gauge invariant differential constraints for anomalous currents and shadow fields and realization of global conformal symmetries are obtained. Gauge invariant two-point vertices for anomalous shadow fields are also obtained. In Stueckelberg gauge frame, these gauge invariant vertices become the standard two-point vertices of CFT. Light-cone gauge two-point vertices of the anomalous shadow fields are derived. AdS/CFT correspondence for anomalous currents and shadow fields and the respective normalizable and non-normalizable solutions of massive low-spin AdS fields is studied. The bulk fields are considered in modified de Donder gauge that leads to decoupled equations of motion. We demonstrate that leftover on-shell gauge symmetries of bulk massive fields correspond to gauge symmetries of boundary anomalous currents and shadow fields, while the modified (Lorentz) de Donder gauge conditions for bulk massive fields correspond to differential constraints for boundary anomalous currents and shadow fields.

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