Time crystals in primordial perturbations

Cosmological time crystal (TC) corresponds to a matter state where the periodic motion of field forms a limit cycle in its phase space. We explore what would happen if it existed in inflationary phase. It is found that the limit cycle responsible for TC will inevitably cause the periodic oscillation...

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Bibliographic Details
Main Authors: Hao-Hao Li, Yun-Song Piao
Format: Article
Language:English
Published: Elsevier 2020-02-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269319308780