Possible detection of nonclassical primordial gravitational waves with Hanbury Brown - Twiss interferometry
High Energy Physics - Theory
2019-04-17 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Quantum Physics
Abstract
We consider possible detection of nonclassicality of primordial gravitational waves (PGWs) by applying Hanbury Brown - Twiss (HBT) interferometry to cosmology. We characterize the nonclassicality of PGWs in terms of sub-Poissonian statistics that can be measured by the HBT interferometry. We show that the presence of classical sources during inflation makes us possible to detect nonclassical PGWs with the HBT interferometry. We present two examples that realize the classical sources during inflation. It turns out that PGWs with frequencies higher than 10 kHz enable us to detect their nonclassicality.
Keywords
Cite
@article{arxiv.1810.07604,
title = {Possible detection of nonclassical primordial gravitational waves with Hanbury Brown - Twiss interferometry},
author = {Sugumi Kanno and Jiro Soda},
journal= {arXiv preprint arXiv:1810.07604},
year = {2019}
}
Comments
20 pages, 1 figure