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arXiv 0909.5405hep-thgr-qc
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Horava-Lifshitz引力中的粒子运动学

Particle Kinematics in Horava-Lifshitz Gravity

Dario Capasso, Alexios P. Polychronakos

摘要:

研究了Horava引力理论中点粒子的变形运动学。这是通过将粒子视为具有广义克莱因-戈登作用量的场的光学极限来实现的。我们推导出变形测地线方程,并详细研究了平坦和球对称(Schwarzschild类)时空的情况。由于该理论在局部洛伦兹变换下不是不变的,即使对于平坦流形,偏离标准运动学也变得明显,支持超光速以及大质量的光速粒子。这些与标准行为的偏差可以用来对这个修正的引力理论进行实验检验。

英文摘要:

We study the deformed kinematics of point particles in the Horava theory of gravity. This is achieved by considering particles as the optical limit of fields with a generalized Klein-Gordon action. We derive the deformed geodesic equation and study in detail the cases of flat and spherically symmetric (Schwarzschild-like) spacetimes. As the theory is not invariant under local Lorenz transformations, deviations from standard kinematics become evident even for flat manifolds, supporting superluminal as well as massive luminal particles. These deviations from standard behavior could be used for experimental tests of this modified theory of gravity.

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