Scalar and fermion field interactions with a gravitational wave. (16th April 2020)

• Record Type: Journal Article
• Authors: Morales, Siddhartha; Dasgupta, Arundhati
• Is Part Of: Classical and quantum gravity. Volume 37:Number 10(2020:May)
• Publication Date: 2020-04-16
• Subjects: neutrinos -- gravitational waves -- scalar fields and gravitational waves -- chiral fermions and gravitational waves; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/1361-6382/ab79d6
• Languages: English
• ISSNs: 0264-9381

Abstract

Abstract: Given that gravitational waves are the future probes of the Universe, it is important to test various physical effects of these on matter. This article explores the first-order perturbation, caused by a planar gravitational wave, on massless scalar and chiral fermions. We find a new propagating mode for the perturbed fields with a new dispersion relation by solving inhomogeneous differential equations. We also discuss the massive scalar field, and find interesting effects due to the gravitational wave. Our results have physical implications for early Universe cosmology and also for ground-based observations, where the new mode might be able to help in the gravitational waves' detection on Earth.