Detecting nonclassical primordial gravitational waves with Hanbury-Brown-Twiss interferometry

Sugumi Kanno; Jiro Soda

doi:10.1103/PhysRevD.99.084010

Detecting nonclassical primordial gravitational waves with Hanbury-Brown-Twiss interferometry

Sugumi Kanno, Jiro Soda

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We consider the 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 it 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.

Original language	English
Article number	084010
Journal	Physical Review D
Volume	99
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevD.99.084010
Publication status	Published - Apr 15 2019
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1103/PhysRevD.99.084010

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title = "Detecting nonclassical primordial gravitational waves with Hanbury-Brown-Twiss interferometry",

abstract = "We consider the 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 it 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.",

author = "Sugumi Kanno and Jiro Soda",

note = "Funding Information: S. K. was supported by JSPS KAKENHI Grant No. JP18H05862. J. S. was in part supported by JSPS KAKENHI Grants No. JP17H02894, No. JP17K18778, No. JP15H05895, No. JP17H06359, and No. JP18H04589. J. S. is also supported by JSPS Bilateral Joint Research Projects (JSPS-NRF Collaboration) “String Axion Cosmology.” ",

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AU - Soda, Jiro

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