A Direct Probe of the Evolutionary History of the Primordial Universe
Cosmology and Nongalactic Astrophysics
2016-08-09 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
Since Hubble and Lamaitre's discovery of the expanding universe using galaxies till the recent discovery of the accelerating universe using standard candles, direct measurements of the evolution of the scale factor of the universe a(t) have played central roles in establishing the standard model of cosmology. In this letter, we show that such a measurement may be extended to the primordial universe using massive fields as standard clocks, providing a direct evidence for the scenario responsible for the Big Bang. This is a short and non-technical introduction to the idea of classical and quantum primordial standard clocks.
Keywords
Cite
@article{arxiv.1608.01299,
title = {A Direct Probe of the Evolutionary History of the Primordial Universe},
author = {Xingang Chen and Mohammad Hossein Namjoo and Yi Wang},
journal= {arXiv preprint arXiv:1608.01299},
year = {2016}
}
Comments
10 pages; a short and non-technical introduction to primordial standard clocks, to appear in Science China