The issue of the gauge invariance of gravitational waves arises if they are produced in the early universe at second-order in perturbation theory. We address it by dividing the discussion in three parts: The production of gravitational waves, their propagation in the real universe, and their measurement.

On the gauge invariance of cosmological gravitational waves / Luca, V.; Franciolini, G.; Kehagias, A.; Riotto, A.. - In: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. - ISSN 1475-7516. - 2020:3(2020), pp. 014-014. [10.1088/1475-7516/2020/03/014]

On the gauge invariance of cosmological gravitational waves

Franciolini G.;Riotto A.
2020

Abstract

The issue of the gauge invariance of gravitational waves arises if they are produced in the early universe at second-order in perturbation theory. We address it by dividing the discussion in three parts: The production of gravitational waves, their propagation in the real universe, and their measurement.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1643200
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