超新星喜欢超光速大刹车而不是德西特吗?
Do supernovae favor tachyonic Big Brake instead de Sitter?
摘要:
我们调查是否快子标量场,包括暗能量和暗物质的功能,将驱动我们的宇宙走向一个大刹车奇点或德西特膨胀。在此过程中,关键是要建立模型的参数域,这是兼容的Ia型超新星的数据。我们找到了1-sigma等值线,并将快子系统发展到未来。我们的结论是,这两个未来的演变是允许的观测,大刹车变得越来越可能与正模型参数k的增加。
英文摘要:
We investigate whether a tachyonic scalar field, encompassing both dark energy and dark matter-like features will drive our universe towards a Big Brake singularity or a de Sitter expansion. In doing this it is crucial to establish the parameter domain of the model, which is compatible with type Ia supernovae data. We find the 1-sigma contours and evolve the tachyonic sytem into the future. We conclude, that both future evolutions are allowed by observations, Big Brake becoming increasingly likely with the increase of the positive model parameter k.
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。