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arXiv 1003.1635astro-ph.COgr-qc
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反物质的引力相互作用

Gravitational interaction of antimatter

Massimo Villata

摘要:

到目前为止,还没有关于反物质引力行为的实验证据。虽然我们可以确信反物质吸引反物质,但我们对物质和反物质之间的相互作用一无所知。我们从理论上研究这个问题。从物理定律的CPT不变性出发,将电动力学方程和引力方程中的物质转化为反物质。在前一种情况下,结果是众所周知的电荷符号的变化。在后者中,我们发现物质和反物质之间的引力相互作用是相互排斥的。这一结果支持了试图用物质-反物质对称性来解释宇宙加速膨胀的宇宙学模型。

英文摘要:

Until now, there is no experimental evidence on the gravitational behaviour of antimatter. While we may be confident that antimatter attracts antimatter, we do not know anything on the interaction between matter and antimatter. We investigate this issue on theoretical grounds. Starting from the CPT invariance of physical laws, we transform matter into antimatter in the equations of both electrodynamics and gravitation. In the former case, the result is the well-known change of sign of the electric charge. In the latter, we find that the gravitational interaction between matter and antimatter is a mutual repulsion. This result supports cosmological models attempting to explain the Universe accelerated expansion in terms of a matter-antimatter symmetry.

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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