arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1206.6505hep-th
收藏

永恒暴胀中的新局部对偶

New Local Duals in Eternal Inflation

Raphael Bousso, Dan Mainemer Katz

摘要:

全球-本地二元性是永恒通货膨胀中看似不同的监管者的等价物。例如,光锥时间截止(一种调节时间的全局度量)与因果补丁(一种切断空间的局部度量)做出相同的预测。我们表明,全球本地的二元性是更普遍的。它依赖于任何全局截止所固有的冗余:在后期,会达到吸引子状态,其特征是时空的某个基本区域的无限指数自我复制。通过限制到这个基本区域,可以得到一个等效的局部截止。我们得到当地的几个全球截止的利益。新比例因子截断是短胖测地线的对偶,短胖测地线是固定无限小固有宽度的测地线。Vilenkin的CAH截止相当于哈勃管,其宽度与当地哈勃体积成正比。著名的真时截止的精确性问题可以通过考虑它的局部对偶--不可思议的收缩测地线来容易地理解。

英文摘要:

Global-local duality is the equivalence of seemingly different regulators in eternal inflation. For example, the light-cone time cutoff (a global measure, which regulates time) makes the same predictions as the causal patch (a local measure that cuts off space). We show that global-local duality is far more general. It rests on a redundancy inherent in any global cutoff: at late times, an attractor regime is reached, characterized by the unlimited exponential self-reproduction of a certain fundamental region of spacetime. An equivalent local cutoff can be obtained by restricting to this fundamental region. We derive local duals to several global cutoffs of interest. The New Scale Factor Cutoff is dual to the Short Fat Geodesic, a geodesic of fixed infinitesimal proper width. Vilenkin's CAH Cutoff is equivalent to the Hubbletube, whose width is proportional to the local Hubble volume. The famous youngness problem of the Proper Time Cutoff can be readily understood by considering its local dual, the Incredible Shrinking Geodesic.

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。

↑