Time crystals in primordial perturbations
General Relativity and Quantum Cosmology
2019-12-30 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
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 of the primordial perturbation spectrum. The oscillatory patterns of the spectrum depend on the TC parameters, and so encode the crystalline patterns of TC.
Keywords
Cite
@article{arxiv.1907.09148,
title = {Time crystals in primordial perturbations},
author = {Hao-Hao Li and Yun-Song Piao},
journal= {arXiv preprint arXiv:1907.09148},
year = {2019}
}
Comments
11 pages, 4 figures, references added, published version