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arXiv 0911.2106physics.gen-ph
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物质与反物质:时间的两支箭

Matter and antimatter: the two arrows of time

Massimo Villata

摘要:

反粒子可以被解释为在时间中向后运动的普通粒子,这两种描述被认为是等价的,至少在狭义相对论和相对论量子力学中是这样。有人建议,反之亦然,反物质的发现应该证实我们的世界被“赋予”两个相反的时间箭头,从理解世界本身的角度来看,这样的描述可能更有用和方便,至少有一个简单的原因:无论何时,只要从一个“参考系“观察现象,从这个”参考系“看,世界似乎更对称,就更容易理解调节它的物理定律。如果,在将来,我们有可能发现宏观反物质系统的行为,也有可能确认(或不确认)时间的两个箭头的“真实性”。

英文摘要:

Antiparticles may be interpreted as ordinary particles travelling backwards in time and the two descriptions are considered equivalent, at least in special relativity and relativistic quantum mechanics. It is suggested that, vice versa, the discovery of antimatter should be the confirmation that our world is "endowed" with two opposite time-arrows and such a description could be more useful and convenient from the point of view of the understanding of the world itself, at least for a simple reason: whenever phenomena are observed from a "reference frame" from which the world appears more symmetric, it is easier to understand the physical laws which regulate it. If, in the future, it is possible to discover how a macroscopic system of antimatter behaves, it will be also possible to confirm (or not) the "reality" of the two arrows of time.

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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