“axion”的概念、定义、翻译、参考文献-科学参考

axion

Physics

A hypothetical elementary particle postulated to explain why there is no observed CP violation (see CP invariance) in the strong interaction (see fundamental interactions). Axions have not been detected experimentally, although it has been possible to put limits on their mass and other properties from the effects that they would have on some astrophysical phenomena (e.g. the cooling of stars). It has also been suggested that they may account for some or all of the missing matter in the universe (see missing mass).

Astronomy

A hypothetical elementary particle which has been proposed as a candidate for dark matter in the Universe. Axions are expected to have been produced abundantly in the early phases of the hot Big Bang. Although the axion is predicted to have a very tiny mass (about 10⁻¹¹ the mass of an electron) and might therefore be expected to be a form of hot dark matter, it interacts so weakly with radiation that it is, in fact, a plausible candidate for cold dark matter.

单词	axion
释义	axion Physics A hypothetical elementary particle postulated to explain why there is no observed CP violation (see CP invariance) in the strong interaction (see fundamental interactions). Axions have not been detected experimentally, although it has been possible to put limits on their mass and other properties from the effects that they would have on some astrophysical phenomena (e.g. the cooling of stars). It has also been suggested that they may account for some or all of the missing matter in the universe (see missing mass). Astronomy A hypothetical elementary particle which has been proposed as a candidate for dark matter in the Universe. Axions are expected to have been produced abundantly in the early phases of the hot Big Bang. Although the axion is predicted to have a very tiny mass (about 10⁻¹¹ the mass of an electron) and might therefore be expected to be a form of hot dark matter, it interacts so weakly with radiation that it is, in fact, a plausible candidate for cold dark matter.
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