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arXiv 0803.2855gr-qchep-th
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经典物质的引力子散射

Gravitons scattering from classical matter

E. Guadagnini

摘要:

考虑了引力子从经典质量体组成的复合扩展系统中的低能散射,利用有效量子引力的Feynman规则,计算了相应的散射截面,得到了引力耦合常数的最低阶幂.对于旋转行星或恒星的引力子散射,证明了有效量子引力拉格朗日量中物质-引力子耦合的经典极限导致低能散射振幅,这与经典广义相对论中的表达式一致.

英文摘要:

The low energy scattering of gravitons from a composite extended system, which is made of classical massive bodies, is considered; by using the Feynman rules of effective quantum gravity, the corresponding cross-section is computed to lowest order in powers of the gravitational coupling constant. For the gravitons scattering from a rotating planet or a star, it is shown that the classical limit of the matter-gravitons coupling in the effective quantum gravity lagrangian leads to a low energy scattering amplitude which coincides with the expression obtained in classical general relativity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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