Coupling gravitons to matter.
Coupling gravitons to matter.
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DOI：
10.1103/physrevlett.84.3531
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发表时间：
1999-12
影响因子：
8.6
通讯作者：
Z. Bern;A. D. Freitas;H. Wong
中科院分区：
文献类型：
--
作者：
Z. Bern;A. D. Freitas;H. Wong
利用开弦和闭弦之间的关系，我们提出了一个结构的树级散射振幅的引力子最低限度地耦合到物质的规范理论部分振幅。特别是，我们提出的例子与引力子耦合到矢量或单个费米子对的振幅。我们还提出了两个例子与大规模的引力子交换，将出现在大的紧凑尺寸的存在。规范荷用动力学标量或费米子的味道来表示。这也导致了规范理论中颜色和运动学的非常规分解。
Using relationships between open and closed strings, we present a construction of tree-level scattering amplitudes for gravitons minimally coupled to matter in terms of gauge theory partial amplitudes. In particular, we present examples of amplitudes with gravitons coupled to vectors or to a single fermion pair. We also present two examples with massive graviton exchange, as would arise in the presence of large compact dimensions. The gauge charges are represented by flavors of dynamical scalars or fermions. This also leads to an unconventional decomposition of color and kinematics in gauge theories.