关于高阶导数拟黎曼引力的一个注记
A Note on Quasi-Riemannian Gravity with Higher Derivatives
摘要:
准黎曼引力理论中作用在切向时空上的规范群比作用在完整洛伦兹群上的规范群要小。其中,空间旋转群可以被测量以获得具有一般协方差的时空非对称引力。我们可以引入“空间”的高导数相互作用专门改善紫外线的行为与幺正性。
英文摘要:
Quasi-Riemannian theories of gravity have smaller gauge groups acting on the tangent spacetime than the full Lorentz group. Among others, the spatial rotation group can be gauged to obtain spacetime asymmetric gravity with general covariance. We may introduce `spatial' higher-derivative interactions exclusively to improve ultraviolet behavior with unitarity.
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