Causality Versus Gauge Invariance in Quantum Gravity and Supergravity
Causality Versus Gauge Invariance in Quantum Gravity and Supergravity
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量子引力和超引力中的因果关系与规范不变性
DOI：
10.1103/physrevlett.50.705
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发表时间：
1983
影响因子：
8.6
通讯作者：
C. Teitelboim
中科院分区：
文献类型：
--
作者：
C. Teitelboim
我们建议，在量子化引力场的路径积分中，应该只允许那些最终的三维几何位于初始三维几何的未来的时空。因此，与杨-米尔斯场的情况不同，所产生的因果振幅不会被所有规范（表面变形）发生器湮灭。在超引力中，因果振幅也不会被局部超对称发生器湮灭。
It is proposed that one should admit in the path integral for the quantized gravitational field only those space-times for which the final three-geometry is located in the future of the initial one. As a consequence, and unlike the situation for the Yang-Mills field, the resulting causal amplitude is not annihilated by all the gauge (surface deformation) generators. In supergravity the causal amplitude turns out not to be annihilated by the local supersymmetry generators either.